谷底平野 （コクテイヘイヤ） valley plain

渓谷 （ケイコク） valley (with a river running through it), gorge, ravine, canyon

盤谷 （バンコク） Bangkok (Thailand)

谷 （たに） valley

谷間 （たにま） valley, ravine, gorge, chasm, cleavage (of breasts), part or place that has been left behind, blind spot, bottom (of society), (economic) trough, gap (in activity, one's work, etc.), lull, opening

死の谷 （しのたに） valley of death (barrier between product development and commercialization stages)

気圧の谷 （きあつのたに） low pressure trough

極まる （きわまる） to reach an extreme, to reach a limit, to terminate, to come to an end, extremely, to be stuck, to be in a dilemma, to be at a loss, to be decided, to be settled