石窟 /shíkū/ angolul

cave [caves]▼(large, naturally occurring cavity formed underground)
noun
[UK: keɪv] [US: ˈkeɪv]

grotto [grottoes]▼(small cave)
noun
[UK: ˈɡrɒ.təʊ] [US: ˈɡrɑːˌto.ʊ]