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Mount Nakatsu · 1,447 m · 5.0 km N
Tokushima Prefecture

Iya Valley

Floor334 m1,096 ft
Depth
852 m
Rim
1,297 m
Length
8.1 km
Tonight
16°CLight rain · Wind 21 km/h S

Iya Valley is up to 852 m deep: the rim reaches 1,297 m and the floor 334 m, along 8.1 km.

All facts
Floor
334 m
Open the 3D view
3D map

Iya Valley 3D map

Drag to orbit · click, then scroll to zoom (or Ctrl/⌘ + scroll) · One finger scrolls the page · two fingers orbit and zoom · 12 × 12 km

Surface
Vertical scale
Topographic map

Iya Valley topographic map

50 m contours from the Copernicus GLO-30 terrain model. Click two points on the map to draw your own cross-section.Tap two points on the map to draw your own cross-section.

Index contours every 250 mShowing west → east through the centre

Iya Valley elevation profile

West → east through the centre

Hover the profile to read elevation and distance.Tap or drag along the profile to read elevation and distance.
Downloads

Iya Valley downloads: topographic map, heightmap, STL 3D model and DEM

Free files made in your browser from this page's terrain data. No sign-up; credit the sources below.

Print & wall
3D printing & 3D apps
GIS & GPS
</>Embed this mapPaste this into your site to show the interactive 3D terrain, with a credit link back here.<iframe src="https://topolu.com/embed/iya-valley" width="100%" height="480" style="border:0" loading="lazy" allowfullscreen title="3D terrain of Iya Valley"></iframe> <p><a href="https://topolu.com/iya-valley" rel="nofollow">Topolu</a></p>

Free to use with credit: see the data sources

Depth

Depth of Iya Valley

Up to 852 m deep (typically 737 m) along the 8.1 km in view.

2505007501,0001,2501,500852 mrimfloor058.1 km

Rim = the lower side's highest point within 6 km. Centreline follows the river (no mapped valley line).

Weather

Iya Valley weather

Today · Light rain · 16 / 18°C (61 / 64°F) · 0.8 mm · Wind 21 km/h S

Iya Valley forecast for about 1,297 m.

  • Today16°18°0.8 mm21 km/h S
  • Sun14°18°49.5 mm16 km/h S
  • Mon14°18°32.6 mm19 km/h S
  • Tue5°13°5.4 mm19 km/h NW
  • Wed0°10°0.1 mm18 km/h N
  • Thu8°12°0.4 mm11 km/h SW
  • Fri8°15°0.2 mm11 km/h S
  • Sat4°14°0.3 mm14 km/h NW
  • Sun7°9°5.1 mm6 km/h NE
  • Mon5°7°5.0 mm13 km/h N

Forecast data: MET Norway, CC BY 4.0; daily low and high, precipitation total and strongest wind from the hourly data, model run Oct 23, 23:19 UTC.

Camping & parking

Camping & parking near Iya Valley

Campsites, parking, trailheads and mountain huts mapped in OpenStreetMap around Iya Valley, nearest first, by straight-line distance. Check access, fees and permits locally.

  • Nearest parking

    0.2 km SSW

    +2 more within 0.3 km

  • Nearest campsite

    かずら橋キャンプ村

    0.8 km NE · +2 more within 4.2 km

All mapped places 6
PlaceDistance
Parking0.2 km SSW
Parking0.2 km SW
Parking0.3 km WSW
かずら橋キャンプ村Campsite0.8 km NE
祖谷ふれあい公園キャンプサイトCampsite2.6 km NW
龍宮崖コテージCampsite4.2 km ESE
Slope

Slope

Share of the 12 × 12 km view by steepness, from the 30 m model.

Mostly steep: more than half the view is steeper than 30°, the angle of most avalanche terrain.

Gentle, 0–15°
5.6%
Moderate, 15–30°
41.2%
Steep, 30–45°
50.3%
Cliffs, 45° and over
2.9%
Steeper than 30°
53.2% of the 144 km² view
Relief in view
1,438 m low point 161 m
Land cover

Land cover

ESA WorldCover 10 m classification of the same area.

Trees 96.9%Grassland 2.4%

Snow & ice means glaciers and year-round snow (a yearly average), not today’s snow cover.

Wildlife

Wildlife seen nearby

Sightings of the most-seen species on iNaturalist (research grade) within 6 km; 118 species recorded in all.

Sightings per species 6
  • Hardy begonia9
  • Varied Tit8
  • Japanese Freshwater Crab4
  • Sugi4
  • Green penny fern4
  • Kajika Frog3
Where it sits

Where Iya Valley sits

Region
Japan153Asia964
Nearby

Nearby places

More 1
Sources

Data sources

Terrain
Produced using Copernicus WorldDEM-30 © DLR e.V. 2010-2014 and © Airbus Defence and Space GmbH 2014-2018 provided under COPERNICUS by the European Union and ESA; all rights reserved. The European Union, ESA, DLR and Airbus incur no liability for any use of this data and do not endorse this service.
Imagery
Contains modified Copernicus Sentinel data 2025 (scene 2025-07-31)
Land cover
© ESA WorldCover project 2021 / Contains modified Copernicus Sentinel data (2021) processed by ESA WorldCover consortium
Facts
Wikidata (CC0)
Camping & parking, Geometry
© OpenStreetMap contributors (ODbL)
Summits
© OpenStreetMap contributors, via Overture Maps Foundation (ODbL)
Wildlife
iNaturalist community observations, counts only
Panorama
Includes Copernicus WorldDEM-90 © DLR e.V. 2010-2014 and © Airbus Defence and Space GmbH 2014-2018 provided under COPERNICUS by the European Union and ESA; all rights reserved. The European Union, ESA, DLR and Airbus incur no liability for any use of this data and do not endorse this service.
Forecast
Weather forecast from MET Norway (CC BY 4.0)
Sources
Wikidata · Wikipedia