Crazy spawned landscape

I was gonna design something for the server while in single player, and came across these two things naturally created where I spawned.


http://i.imgur.com/9ODpS.jpg

http://i.imgur.com/XHdDJ.jpg

http://i.imgur.com/Ze0BT.png

Few hundred blocks away:

http://i.imgur.com/VHKbv.jpg

 

'tis called a surface ravine...

 

But one was crossed on the surface, the other, very close by, was halfway in the water, and the water wasn't moving

 

Uhhh flymod????? BAN! lol