The sinkhole in Mexico is more than 330 meters deep. Unexpectedly, there hidden a secret garden. The daunting sinkhole is the world's deepest naturally formed pits. It looks just like the scene from J. R. R. Tolkien's “The Hobbit”. (Photo: xinmin.cn)
Potholers climbing down into the secret garden. Potholers said that only the most experienced can conquer these sinkholes. The spanish name for these sinkholes is "Sótano de las Golondrinas”, meaning "basement for swallows". There do live a lot of birds. (Photo: xinmin.cn)
The sinkhole is about 3-pitch wide. (Photo: xinmin.cn)
According to atlasobscura.com, if Statue of Liberty stands in here, only her shoulder can be seen on the above ground. (Photo: xinmin.cn)
Pot-holer in the sinkhole. (Photo: xinmin.cn)
??Pictures taken from below. (Photo: xinmin.cn)
Pot-holers in the sinkhole. (Photo: xinmin.cn)
Sinkhole from inside. (Photo: xinmin.cn)
A sketch map of the sinkhole. (Photo: xinmin.cn)
The photographer. (Photo: xinmin.cn)
