Odd Couple Part II

So remember the treasure seekers from this post? I guess they found something. I was driving home from work yesterday and they were back. Both of them were there. They seemed pretty serious about it. From what I could tell they had actually laid out a grid on the ground with string or rope or something like an archaeologist and they were digging. When Lisa and I drove by later that night, they were gone but they had left the grid up. So do you think they found magic McDonald's mcburgler bucks or pioneer treasure??