How do you fix a sink hole this big?

[Alex]

Originally Posted by Kevy Baby

To the best of my recollection, sink-holes typically have sloped sides.

I was thinking the same thing but in looking at sinkhole pictures online I'm seeing that it seems to be pretty common for big ones to have pretty straight lines and be surprisingly circular. Such as this one in Texas in 2003:

[Kevy Baby]

Originally Posted by Alex

I was thinking the same thing but in looking at sinkhole pictures online I'm seeing that it seems to be pretty common for big ones to have pretty straight lines and be surprisingly circular. Such as this one in Texas in 2003: (picture removed)

But even in looking at this one, you can still see some pronounced angle to what can be seen of the sides - especially in the upper left area of the whole. Plus, on this example, we are seeing a relatively small portion of the actual hole (due to the water).

But looking further, a cursory glance seems to indicate that at least towards the tops, the edges are pretty straight. However, I still think the Guatemala sinkhole is awfully straight-sided.