Qanat Dig
Qanat Dig: an interactive puzzle about ancient qanat engineering. Drag to place vertical shafts and dig gently sloping tunnel segments from a mother well to a village. Shaft spacing trades cost against accumulating alignment error; water table depth and surface profile shape the achievable route; collapse risk depends on soil and shaft depth. See the finished section with shafts and alignment error, learn whether water reaches the village, and share the result.
Created by haojie.huang
