Just.... yikes.

[nathan]

If vertigo is a problem, you might want to skip this:

http://dotearth.blogs.nytimes.com/2010/05/31/dot-shot-sinkhole-in-guatemala-city/?src=mv

http://farm5.static.flickr.com/4051/4657053554_ccf901edb5_o.jpg

 

[welltan]

Enlarge your second photo and across to the other side, talk about stair-steps to nowhere!

Interesting information for Floridians.

http://plants.ifas.ufl.edu/guide/sinkholes.html

 

[nathan]

Yeah, I've been to a few Florida sinkholes, but thanks to our sand they don't go straight down, more like a saucer, and they usually fill up with water after 10 feet.

Paul: Be funny if it wasn't so true - more like an endless 'black hole': at least a sinkhole usually stops growing after a few days.