https://montagna-katokeyci.github.io/oohc/tags/%E5%BB%83%E9%81%93/Recent content in 廃道 on 山とカンツォーネHugoja-jpSun, 27 Sep 2026 00:00:00 +0000https://montagna-katokeyci.github.io/oohc/posts/2026-09-27/Sun, 27 Sep 2026 00:00:00 +0000https://montagna-katokeyci.github.io/oohc/posts/2026-09-27/<p>「旧青梅街道」に違いはない。しかし奥多摩駅のひとつ手前の集落、日向と、氷川（奥多摩駅）を結ぶわずか700mの話である。現在の国道の15ｍ〜20ｍ上に、明治大正までの道が部分的に残っている。<br> 駅前の土産物屋のご主人によれば、「馬車は通れた。うちの祖父さんが馬で炭を運んだ道だよ」とのことだが、いまや歩く人を選ぶ。奥多摩駅からもっとも近い、極悪の廃道になっている。</p> <hr> <table> <thead> <tr> <th style="text-align: left">項目</th> <th style="text-align: left">内容</th> </tr> </thead> <tbody> <tr> <td style="text-align: left"><strong>記録日</strong></td> <td style="text-align: left">2026年9月27日（日）</td> </tr> <tr> <td style="text-align: left"><strong>天候</strong></td> <td style="text-align: left">雨上がりの曇天</td> </tr> <tr> <td style="text-align: left"><strong>パーティ</strong></td> <td style="text-align: left">モンターニャ単独</td> </tr> <tr> <td style="text-align: left"><strong>アクセス</strong></td> <td style="text-align: left">JR青梅線で奥多摩駅</td> </tr> <tr> <td style="text-align: left"><strong>行程</strong></td> <td style="text-align: left"></td> </tr> </tbody> </table> <hr> <h3 id="コースタイム">コースタイム</h3> <ul> <li>記入中</li> <li></li> </ul> <hr> <h3 id="コースマップ">コースマップ</h3> <link rel="stylesheet" href="https://unpkg.com/leaflet@1.9.4/dist/leaflet.css" /> <style> .gpx-container { width: 100%; margin: 1.5rem 0; border: 1px solid #ccc; border-radius: 8px; overflow: hidden; background: #fff; box-shadow: 0 2px 6px rgba(0,0,0,0.08); font-family: sans-serif; } .gpx-map { height: 380px; width: 100%; } .gpx-summary { display: flex; flex-wrap: nowrap; justify-content: space-between; align-items: center; background: #f8f9fa; padding: 8px 10px; border-top: 1px solid #e0e0e0; border-bottom: 1px solid #e0e0e0; font-size: 0.8rem; color: #333; overflow-x: auto; white-space: nowrap; } .gpx-summary-item { margin: 0 4px; } .gpx-summary-item strong { color: #007bff; font-size: 0.95rem; margin-left: 2px; } .gpx-chart-wrapper { height: 180px; width: 100%; padding: 10px; background: #fafafa; box-sizing: border-box; } .start-marker-icon, .goal-marker-icon { background: none; border: none; font-weight: bold; font-size: 11px; color: #ffffff; text-align: center; line-height: 18px; } </style> <div class="gpx-container"> <div id="map-7fe9c563" class="gpx-map"></div> <div id="summary-7fe9c563" class="gpx-summary"> <div class="gpx-summary-item">総距離:<strong id="sum-dist-7fe9c563">-</strong> km</div> <div class="gpx-summary-item">累積標高上り:<strong id="sum-up-7fe9c563">-</strong> m</div> <div class="gpx-summary-item">累積標高下り:<strong id="sum-down-7fe9c563">-</strong> m</div> <div class="gpx-summary-item">最高標高:<strong id="sum-max-7fe9c563">-</strong> m</div> <div class="gpx-summary-item">最低標高:<strong id="sum-min-7fe9c563">-</strong> m</div> </div> <div class="gpx-chart-wrapper"> <canvas id="chart-7fe9c563"></canvas> </div> </div> <script src="https://unpkg.com/leaflet@1.9.4/dist/leaflet.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/leaflet-gpx/1.7.0/gpx.min.js"></script> <script src="https://cdn.jsdelivr.net/npm/chart.js"></script> <script> window.addEventListener('load', function() { var gpxUrl = '\/oohc\/posts\/2026-09-27\/20260927_20260927.gpx'; var map = L.map('map-7fe9c563').setView([0, 0], 10); L.tileLayer('https://cyberjapandata.gsi.go.jp/xyz/std/{z}/{x}/{y}.png', { attribution: '<a href="https://maps.gsi.go.jp/development/ichiran.html" target="_blank">国土地理院</a>', maxZoom: 18 }).addTo(map); L.control.scale({ imperial: false, position: 'bottomleft' }).addTo(map); var hoverMarker = null; var trackPoints = []; var timeLabels = []; var ctx = document.getElementById('chart-7fe9c563').getContext('2d'); var chart = new Chart(ctx, { type: 'line', data: { datasets: [{ label: '標高 (m)', data: [], borderColor: '#007bff', backgroundColor: 'rgba(0, 123, 255, 0.1)', fill: true, borderWidth: 1.5, pointRadius: 0, pointHoverRadius: 6, tension: 0.1 }] }, options: { responsive: true, maintainAspectRatio: false, interaction: { mode: 'index', intersect: false }, plugins: { legend: { display: false }, tooltip: { callbacks: { title: function(items) { var index = items[0].dataIndex; var timeStr = timeLabels[index] || ''; var distStr = items[0].raw.x.toFixed(2) + ' km'; return timeStr ? '時刻: ' + timeStr + '（距離: ' + distStr + '）' : '距離: ' + distStr; }, label: function(item) { return '標高: ' + item.raw.y + ' m'; } } } }, scales: { x: { type: 'linear', display: true, title: { display: true, text: '距離 (km)', font: { size: 10 } }, ticks: { font: { size: 10 } }, grid: { color: 'rgba(0, 0, 0, 0.05)' } }, y: { display: true, title: { display: true, text: '標高 (m)', font: { size: 10 } }, ticks: { font: { size: 10 } }, grid: { color: 'rgba(0, 0, 0, 0.05)' } } }, onHover: function(event, activeElements) { if (activeElements && activeElements.length > 0) { var index = activeElements[0].index; updateHoverMarker(index); } } } }); function updateHoverMarker(index) { var pt = trackPoints[index]; if (pt) { if (!hoverMarker) { hoverMarker = L.circleMarker([pt.lat, pt.lng], { radius: 8, fillColor: '#00ffff', color: '#ffffff', weight: 3, opacity: 1, fillOpacity: 1 }).addTo(map); } else { hoverMarker.setLatLng([pt.lat, pt.lng]); } } } function extractTrackData(layer) { var pts = []; var polylines = []; if (typeof layer.getLatLngs === 'function') { var latlngs = layer.getLatLngs(); var flat = Array.isArray(latlngs[0]) ? latlngs.flat(Infinity) : latlngs; flat.forEach(function(p) { if (p && typeof p.lat === 'number') { pts.push({ lat: p.lat, lng: p.lng }); } }); if (layer instanceof L.Polyline) { polylines.push(layer); } } else if (typeof layer.eachLayer === 'function') { layer.eachLayer(function(child) { var res = extractTrackData(child); pts = pts.concat(res.pts); polylines = polylines.concat(res.polylines); }); } return { pts: pts, polylines: polylines }; } fetch(gpxUrl) .then(function(response) { return response.text(); }) .then(function(xmlText) { var parser = new DOMParser(); var xmlDoc = parser.parseFromString(xmlText, "text/xml"); var trkpts = xmlDoc.getElementsByTagName("trkpt"); for (var i = 0; i < trkpts.length; i++) { var timeNode = trkpts[i].getElementsByTagName("time")[0]; if (timeNode) { var dateObj = new Date(timeNode.textContent); var timeStr = dateObj.toLocaleTimeString([], { hour: '2-digit', minute: '2-digit', hour12: false }); timeLabels.push(timeStr); } else { timeLabels.push(''); } } }) .catch(function(err) { console.error("GPX Time Parsing Error:", err); }); new L.GPX(gpxUrl, { async: true, polyline_options: { color: '#ff3300', weight: 5, opacity: 0.8 }, marker_options: { startIconUrl: null, endIconUrl: null, wptIconUrls: null } }).on('loaded', function(e) { var gpx = e.target; map.fitBounds(gpx.getBounds()); var totalDistMeters = gpx.get_distance(); var distKmNum = totalDistMeters / 1000; var distKmStr = distKmNum.toFixed(2); var maxEle = Math.round(gpx.get_elevation_max()); var minEle = Math.round(gpx.get_elevation_min()); var gainEle = Math.round(gpx.get_elevation_gain()); var lossEle = Math.round(gpx.get_elevation_loss()); document.getElementById('sum-dist-7fe9c563').innerText = distKmStr; document.getElementById('sum-up-7fe9c563').innerText = gainEle; document.getElementById('sum-down-7fe9c563').innerText = lossEle; document.getElementById('sum-max-7fe9c563').innerText = maxEle; document.getElementById('sum-min-7fe9c563').innerText = minEle; var eleData = gpx.get_elevation_data(); var chartDataPoints = []; var extracted = extractTrackData(gpx); trackPoints = extracted.pts; if (trackPoints.length > 0) { var startPt = trackPoints[0]; var endPt = trackPoints[trackPoints.length - 1]; L.circleMarker([startPt.lat, startPt.lng], { radius: 9, fillColor: '#28a745', color: '#ffffff', weight: 2, opacity: 1, fillOpacity: 0.9 }).addTo(map).bindTooltip('スタート', { permanent: false, direction: 'top' }); L.circleMarker([endPt.lat, endPt.lng], { radius: 9, fillColor: '#dc3545', color: '#ffffff', weight: 2, opacity: 1, fillOpacity: 0.9 }).addTo(map).bindTooltip('ゴール', { permanent: false, direction: 'top' }); } eleData.forEach(function(item) { var dist = typeof item[0] === 'number' ? item[0] : parseFloat(item[0]); var ele = Math.round(item[1]); chartDataPoints.push({ x: parseFloat(dist.toFixed(2)), y: ele }); }); var dynamicStepSize = 1.0; if (distKmNum <= 5) { dynamicStepSize = 0.5; } else if (distKmNum <= 20) { dynamicStepSize = 1.0; } else if (distKmNum <= 40) { dynamicStepSize = 5.0; } else { dynamicStepSize = 10.0; } chart.options.scales.x.max = distKmNum; var allowedTicks = []; for (var v = 0; v < distKmNum; v += dynamicStepSize) { allowedTicks.push(parseFloat(v.toFixed(1))); } chart.options.scales.x.ticks.callback = function(value) { for (var i = 0; i < allowedTicks.length; i++) { if (Math.abs(value - allowedTicks[i]) < 0.01) { return value + ' km'; } } return ''; }; chart.options.scales.x.afterBuildTicks = function(axis) { axis.ticks = allowedTicks.map(function(val) { return { value: val }; }); }; chart.data.datasets[0].data = chartDataPoints; chart.update(); extracted.polylines.forEach(function(polyline) { polyline.on('mousemove', function(ev) { if (!trackPoints.length) return; var mouseLatLng = ev.latlng; var closestIndex = 0; var minDist = Infinity; for (var i = 0; i < trackPoints.length; i++) { var d = mouseLatLng.distanceTo(L.latLng(trackPoints[i].lat, trackPoints[i].lng)); if (d < minDist) { minDist = d; closestIndex = i; } } updateHoverMarker(closestIndex); chart.setActiveElements([{ datasetIndex: 0, index: closestIndex }]); chart.tooltip.setActiveElements([{ datasetIndex: 0, index: closestIndex }], { x: 0, y: 0 }); chart.update(); }); }); }).addTo(map); }); </script> <hr> <h3 id="山行記録">山行記録</h3> <h4 id="プロローグ">プロローグ</h4> <p>道を見つけたのは偶然だ。<br> 半日だけ歩くと決めた日曜早朝の青梅線車内で「どこを歩こうか」。ゴンザス尾根から石尾根の範囲を思い浮かべて候補を探す。そういえば、駅近のゴンザス尾根の下の方は、足を向ける機会が少ないな。大氷川の南端から除ヶ野～安寺沢へ向かう日原古道をたどり、分かれる踏み跡があればたどってみようか。<br> 散歩気分で奥多摩駅をスタートする。新氷川トンネルの手前で旧国道に入りもえぎの湯方向へ向かい、しかし大氷川の南に上がる階段を通り過ぎてしまう。直感が働いたといえば誇張で、「ゴンザス尾根の南端はもっと先だから」、もう少し探索してみようと思っただけだ。<br> 氷川隧道をくぐりもえぎの湯の前を通り過ぎ、馬頭さまに通りかかる。拝んでから解説板を読んでみる。</p>https://montagna-katokeyci.github.io/oohc/posts/2026-08-02/Sun, 02 Aug 2026 00:00:00 +0000https://montagna-katokeyci.github.io/oohc/posts/2026-08-02/<p>日向沢林道を終点まで歩いたが、踊平のトンネルから終点まで、すでに道の体をなしていない。前週の疲れが残り、「息抜きの山歩き」コースを選んだつもりが。やたらと汗をかき、激しく疲労した。ここ2年のなかではいちばんの疲れ具合で、熱中症にならぬよう、マリアさまに祈りながらフラフラ歩いた。</p> <hr> <table> <thead> <tr> <th style="text-align: left">項目</th> <th style="text-align: left">内容</th> </tr> </thead> <tbody> <tr> <td style="text-align: left"><strong>記録日</strong></td> <td style="text-align: left">2026年8月2日（日）</td> </tr> <tr> <td style="text-align: left"><strong>天候</strong></td> <td style="text-align: left">雲量多い晴れ→曇り、弱い風あり</td> </tr> <tr> <td style="text-align: left"><strong>パーティ</strong></td> <td style="text-align: left">モンターニャ単独</td> </tr> <tr> <td style="text-align: left"><strong>アクセス</strong></td> <td style="text-align: left">西東京バスて川乗橋バス停</td> </tr> <tr> <td style="text-align: left"><strong>行程</strong></td> <td style="text-align: left"></td> </tr> </tbody> </table> <hr> <h3 id="コースタイム">コースタイム</h3> <ul> <li>08:00～川乗橋バス停スタート</li> <li>08:27～川乗山登山口（細倉橋）</li> <li>09:19～林道分岐（林道川乗線・林道日向沢線）</li> <li>09:29～川乗林道終点付近～09:54</li> <li>記入中</li> <li></li> </ul> <hr> <h3 id="コースマップ">コースマップ</h3> <link rel="stylesheet" href="https://unpkg.com/leaflet@1.9.4/dist/leaflet.css" /> <style> .gpx-container { width: 100%; margin: 1.5rem 0; border: 1px solid #ccc; border-radius: 8px; overflow: hidden; background: #fff; box-shadow: 0 2px 6px rgba(0,0,0,0.08); font-family: sans-serif; } .gpx-map { height: 380px; width: 100%; } .gpx-summary { display: flex; flex-wrap: nowrap; justify-content: space-between; align-items: center; background: #f8f9fa; padding: 8px 10px; border-top: 1px solid #e0e0e0; border-bottom: 1px solid #e0e0e0; font-size: 0.8rem; color: #333; overflow-x: auto; white-space: nowrap; } .gpx-summary-item { margin: 0 4px; } .gpx-summary-item strong { color: #007bff; font-size: 0.95rem; margin-left: 2px; } .gpx-chart-wrapper { height: 180px; width: 100%; padding: 10px; background: #fafafa; box-sizing: border-box; } .start-marker-icon, .goal-marker-icon { background: none; border: none; font-weight: bold; font-size: 11px; color: #ffffff; text-align: center; line-height: 18px; } </style> <div class="gpx-container"> <div id="map-7a6a14db" class="gpx-map"></div> <div id="summary-7a6a14db" class="gpx-summary"> <div class="gpx-summary-item">総距離:<strong id="sum-dist-7a6a14db">-</strong> km</div> <div class="gpx-summary-item">累積標高上り:<strong id="sum-up-7a6a14db">-</strong> m</div> <div class="gpx-summary-item">累積標高下り:<strong id="sum-down-7a6a14db">-</strong> m</div> <div class="gpx-summary-item">最高標高:<strong id="sum-max-7a6a14db">-</strong> m</div> <div class="gpx-summary-item">最低標高:<strong id="sum-min-7a6a14db">-</strong> m</div> </div> <div class="gpx-chart-wrapper"> <canvas id="chart-7a6a14db"></canvas> </div> </div> <script src="https://unpkg.com/leaflet@1.9.4/dist/leaflet.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/leaflet-gpx/1.7.0/gpx.min.js"></script> <script src="https://cdn.jsdelivr.net/npm/chart.js"></script> <script> window.addEventListener('load', function() { var gpxUrl = '\/oohc\/posts\/2026-08-02\/20260802_20260802.gpx'; var map = L.map('map-7a6a14db').setView([0, 0], 10); L.tileLayer('https://cyberjapandata.gsi.go.jp/xyz/std/{z}/{x}/{y}.png', { attribution: '<a href="https://maps.gsi.go.jp/development/ichiran.html" target="_blank">国土地理院</a>', maxZoom: 18 }).addTo(map); L.control.scale({ imperial: false, position: 'bottomleft' }).addTo(map); var hoverMarker = null; var trackPoints = []; var timeLabels = []; var ctx = document.getElementById('chart-7a6a14db').getContext('2d'); var chart = new Chart(ctx, { type: 'line', data: { datasets: [{ label: '標高 (m)', data: [], borderColor: '#007bff', backgroundColor: 'rgba(0, 123, 255, 0.1)', fill: true, borderWidth: 1.5, pointRadius: 0, pointHoverRadius: 6, tension: 0.1 }] }, options: { responsive: true, maintainAspectRatio: false, interaction: { mode: 'index', intersect: false }, plugins: { legend: { display: false }, tooltip: { callbacks: { title: function(items) { var index = items[0].dataIndex; var timeStr = timeLabels[index] || ''; var distStr = items[0].raw.x.toFixed(2) + ' km'; return timeStr ? '時刻: ' + timeStr + '（距離: ' + distStr + '）' : '距離: ' + distStr; }, label: function(item) { return '標高: ' + item.raw.y + ' m'; } } } }, scales: { x: { type: 'linear', display: true, title: { display: true, text: '距離 (km)', font: { size: 10 } }, ticks: { font: { size: 10 } }, grid: { color: 'rgba(0, 0, 0, 0.05)' } }, y: { display: true, title: { display: true, text: '標高 (m)', font: { size: 10 } }, ticks: { font: { size: 10 } }, grid: { color: 'rgba(0, 0, 0, 0.05)' } } }, onHover: function(event, activeElements) { if (activeElements && activeElements.length > 0) { var index = activeElements[0].index; updateHoverMarker(index); } } } }); function updateHoverMarker(index) { var pt = trackPoints[index]; if (pt) { if (!hoverMarker) { hoverMarker = L.circleMarker([pt.lat, pt.lng], { radius: 8, fillColor: '#00ffff', color: '#ffffff', weight: 3, opacity: 1, fillOpacity: 1 }).addTo(map); } else { hoverMarker.setLatLng([pt.lat, pt.lng]); } } } function extractTrackData(layer) { var pts = []; var polylines = []; if (typeof layer.getLatLngs === 'function') { var latlngs = layer.getLatLngs(); var flat = Array.isArray(latlngs[0]) ? latlngs.flat(Infinity) : latlngs; flat.forEach(function(p) { if (p && typeof p.lat === 'number') { pts.push({ lat: p.lat, lng: p.lng }); } }); if (layer instanceof L.Polyline) { polylines.push(layer); } } else if (typeof layer.eachLayer === 'function') { layer.eachLayer(function(child) { var res = extractTrackData(child); pts = pts.concat(res.pts); polylines = polylines.concat(res.polylines); }); } return { pts: pts, polylines: polylines }; } fetch(gpxUrl) .then(function(response) { return response.text(); }) .then(function(xmlText) { var parser = new DOMParser(); var xmlDoc = parser.parseFromString(xmlText, "text/xml"); var trkpts = xmlDoc.getElementsByTagName("trkpt"); for (var i = 0; i < trkpts.length; i++) { var timeNode = trkpts[i].getElementsByTagName("time")[0]; if (timeNode) { var dateObj = new Date(timeNode.textContent); var timeStr = dateObj.toLocaleTimeString([], { hour: '2-digit', minute: '2-digit', hour12: false }); timeLabels.push(timeStr); } else { timeLabels.push(''); } } }) .catch(function(err) { console.error("GPX Time Parsing Error:", err); }); new L.GPX(gpxUrl, { async: true, polyline_options: { color: '#ff3300', weight: 5, opacity: 0.8 }, marker_options: { startIconUrl: null, endIconUrl: null, wptIconUrls: null } }).on('loaded', function(e) { var gpx = e.target; map.fitBounds(gpx.getBounds()); var totalDistMeters = gpx.get_distance(); var distKmNum = totalDistMeters / 1000; var distKmStr = distKmNum.toFixed(2); var maxEle = Math.round(gpx.get_elevation_max()); var minEle = Math.round(gpx.get_elevation_min()); var gainEle = Math.round(gpx.get_elevation_gain()); var lossEle = Math.round(gpx.get_elevation_loss()); document.getElementById('sum-dist-7a6a14db').innerText = distKmStr; document.getElementById('sum-up-7a6a14db').innerText = gainEle; document.getElementById('sum-down-7a6a14db').innerText = lossEle; document.getElementById('sum-max-7a6a14db').innerText = maxEle; document.getElementById('sum-min-7a6a14db').innerText = minEle; var eleData = gpx.get_elevation_data(); var chartDataPoints = []; var extracted = extractTrackData(gpx); trackPoints = extracted.pts; if (trackPoints.length > 0) { var startPt = trackPoints[0]; var endPt = trackPoints[trackPoints.length - 1]; L.circleMarker([startPt.lat, startPt.lng], { radius: 9, fillColor: '#28a745', color: '#ffffff', weight: 2, opacity: 1, fillOpacity: 0.9 }).addTo(map).bindTooltip('スタート', { permanent: false, direction: 'top' }); L.circleMarker([endPt.lat, endPt.lng], { radius: 9, fillColor: '#dc3545', color: '#ffffff', weight: 2, opacity: 1, fillOpacity: 0.9 }).addTo(map).bindTooltip('ゴール', { permanent: false, direction: 'top' }); } eleData.forEach(function(item) { var dist = typeof item[0] === 'number' ? item[0] : parseFloat(item[0]); var ele = Math.round(item[1]); chartDataPoints.push({ x: parseFloat(dist.toFixed(2)), y: ele }); }); var dynamicStepSize = 1.0; if (distKmNum <= 5) { dynamicStepSize = 0.5; } else if (distKmNum <= 20) { dynamicStepSize = 1.0; } else if (distKmNum <= 40) { dynamicStepSize = 5.0; } else { dynamicStepSize = 10.0; } chart.options.scales.x.max = distKmNum; var allowedTicks = []; for (var v = 0; v < distKmNum; v += dynamicStepSize) { allowedTicks.push(parseFloat(v.toFixed(1))); } chart.options.scales.x.ticks.callback = function(value) { for (var i = 0; i < allowedTicks.length; i++) { if (Math.abs(value - allowedTicks[i]) < 0.01) { return value + ' km'; } } return ''; }; chart.options.scales.x.afterBuildTicks = function(axis) { axis.ticks = allowedTicks.map(function(val) { return { value: val }; }); }; chart.data.datasets[0].data = chartDataPoints; chart.update(); extracted.polylines.forEach(function(polyline) { polyline.on('mousemove', function(ev) { if (!trackPoints.length) return; var mouseLatLng = ev.latlng; var closestIndex = 0; var minDist = Infinity; for (var i = 0; i < trackPoints.length; i++) { var d = mouseLatLng.distanceTo(L.latLng(trackPoints[i].lat, trackPoints[i].lng)); if (d < minDist) { minDist = d; closestIndex = i; } } updateHoverMarker(closestIndex); chart.setActiveElements([{ datasetIndex: 0, index: closestIndex }]); chart.tooltip.setActiveElements([{ datasetIndex: 0, index: closestIndex }], { x: 0, y: 0 }); chart.update(); }); }); }).addTo(map); }); </script> <hr> <h3 id="山行記録">山行記録</h3> <p>記入中です</p>