自然奇观

yo1yo2

In 2007, natural disasters create a depth of 300 feet sinkhole swallowed a dozen homes in Guatemala – killing 2 and causing thousands of people were evacuated. The sinkhole was caused by rain and underground waste stream.

这是神马洞

qwertyuiop 发表于 2012-10-9 22:30
这是神马洞

人工洞

yo1yo2 发表于 2012-10-9 22:34
人工洞

外星人入侵地球
cover me~
Roger