underground mine complex

en-US/ˌʌndɚˈɡɹæʊnd ˈmaɪn ˈkɑmplɛks/
en-GB/ˈʌndəɡɹaʊnd ˈmaɪn ˈkɒmplɛks/

หมวดหมู่:

subterranea