A female Green Tiger Beetle excavating a hole in preperation for ovipositing. The back of her abdomen is a great digging tool and the small clods of drying soil behind her have been lifted out by it.
I just finished processing and uploading a short video of this beetle and if you're interested it can be viewed here: http://youtu.be/3Fv6UekfSEI
I had to shorten it unfortunately because it was a bit too large a file to upload, it starts about 2/3rds of the way through the process of making the hole for her eggs.
Close-up and macro
Green Tiger Beetle
KarenFB, Cor, JenniCh and 7 more