We're Sinking!

What gives lately with sink holes? First we almost have our backyard swallowed up by one (ok maybe a small exageration). It started with a small hole the size of my foot (could almost fit my foot in it), we knew we should fill it so the dog's didn't trip in it and break a leg, then one day after a few days of rain hubby calls me out to come and see something. And guess what! There he is with shovel sunk down into it, and had he let go of the shovel it would have disappeared! Not kidding!! So now obviously we had to get a load of fill and fill it in before the dogs actually got swallowed up whole in it!

Ok so look at this pic my sister sends me today! Wow, imagine your car being swallowed whole!