How do you say cave in Chinese?
— 洞; 洞穴; 洞穴

Terms within for cave in Chinese
floor樓, 楼 (lóu), 樓層, 楼层 (lóucéng), 層, 层 (céng)
roof屋頂, 屋顶 (wūdǐng)
wall牆壁, 墙壁 (qiángbì), 牆, 墙 (qiáng)