Very cool pictures. Haha, I was about to ask about those temps when I read the last line.

How far into a crack changes temp and how far back do you need to go to get that constant temp?

Is that a green rat in the 3rd from the last pic?

Also, I am not sure why but whenever you post pics not all of them show up at once. I checked them out this morning and then just looked at them again and a few pictures loaded that were not there this morning. Weird.

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