groundwater is located under ground / underground
find_underground is not water_pipe. underground_area is not area_below_ground. find_underground is caves. subterranean_river is not underground_source_of_water. find_underground is basement. subterranean_river is underground_source_of_water. underground_area is area_below_ground. groundwater is water. find_underground is water_pipe. find_underground is waterline.