Cracking pool deck grout

I have an inground gunite pool that has some cracking on the deck area between stone and the deck. I think this is just a very wide grout area but I'm not certain. I've attached a couple pictures. Any idea what this is and the best way to remove and replace it?

Thanks


http://s232.photobucket.com/albums/e...poolgrout1.jpg

http://s232.photobucket.com/albums/e...poolgrout3.jpg