4 ms·
https://en.wikipedia.org/wiki/Hang_S%C6%A1n_%C4%90o%C3%B2ng https://en.wikipedia.org/wiki/Hang_S%C6%A1n_%C4%90o%C3%B2ng A bit more information and some nice pho
by SapporoChris 3y ago
https://en.wikipedia.org/wiki/Hang_S%C6%A1n_%C4%90o%C3%B2ng https://en.wikipedia.org/wiki/Hang_S%C6%A1n_%C4%90o%C3%B2ng
A bit more information and some nice photos also.