壑谷 Traditional form: 壑谷 Pinyin (reading): hègǔ Definitions: low-lying humid terrain Characters: 壑 - gully, pool; a ditch carved by a torrential rain 谷 - valley, gorge, ravine Traditional characters: 壑 - gully, pool; a ditch carved by a torrential rain 谷 - valley, gorge, ravine