Digital sandbox
40 digital sandboxes in one place: regional sandboxes are divided by administrative unit, teaching sandboxes turn classic textbook profiles into 3D terrain you can compare. Pick any tile to enter.
40 sandboxes · China province-level 34 · countries 1 · river basins 1 · teaching 4
40 sandboxes
Mostly hills
Mostly lowland
Mostly lowland
Mostly mountains
Mostly mountains
Mostly hills
Mostly hills
Mostly hills
Mostly lowland
Mostly lowland
Mostly hills
Mostly lowland
Mostly hills
Mostly hills
Mostly lowland
Mostly lowland
Mostly hills
Mostly hills
Mostly hills
Mostly hills
Mostly lowland
Mostly hills
Mostly mountains
Mostly mountains
Mostly mountains
Mostly mountains
Mostly mountains
Mostly mountains
Mostly mountains
Mostly mountains
Mostly mountains
Mostly hills
Mostly lowland
Mostly lowland
Mostly hills
The whole Yangtze basin from the Tanggula headwaters to the estuary: SRTM 30 m terrain, HydroBASINS sub-basins, the main stem and major tributaries, lakes and riverside cities.
The western half is a flat plateau top (~3600 m); it drops abruptly eastward to a piedmont plain, with a river valley deeply incised across the escarpment.
West to east: mountains → hills → coastal plain → ocean. See how evaporation, vapour transport, precipitation, runoff and infiltration close the sea–land cycle.
A 5200 m massif: five altitudinal zones from foothill rainforest to summit snow, whose boundaries are true elevation contours.
Three anticlinal ridges alternate with two synclinal valleys, flanked by steep limbs; rivers occupy the synclinal axes.