He figured that if you dumped water into the desert sand and let it percolate down to the bedrock, it wouldn't evaporate the way it does in reservoirs.
Hona etorri ginenean, bururatu zitzaion hondar gainean ura jartzea eta harkaitzera iragazten uztea, han gordea gera zedin lurruntzen utzi ordez, urtegietan bezala.