I found the end of the Beam yesterday, apparently.
The other end with the Bear was much more interesting. I was a bit too preoccupied at the time to get pictures, though.
His shell is about 15" from end to end. My shoe is a bit over a foot.
Somebody or something tried to crack his shell at some point. Big old hole in it, appears to be semi-healed, but with a cavity. There's a second smaller crack with a rock wedged into it towards the front.
Big old earth-mover claws for digging up stuff. He hid them when I came up to him. No sharp beak, which I was initially concerned about while stepping around him. He's a grass-grazer.
I went hiking on Sunday just south of Canyon Lake, in the Superstition Mountains. I've never seen one of these before, and it was a treat. He was a BIG specimen in comparison to what Wiki has to say on the subject. This particular guy was about 2 miles from the lake, and 800 feet above it.