AWSX Wrote:
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> A 5' 6" deep doesn't seem deep enough to trap a
> mammoth.

According to this (page 212)
[books.google.com]
10 or more feet deep was required plus a log to step over. But this is for elephants, no guarantee 10 foot would be needed for the depth of a mammoth trap. The other dimension (diameter) is roughly the same ( 25 foot dia vs 25 meters dia). So to falsify this find, it doesn't look like the size of the pit will do it. If it were just one pit, you could blame it on a freak pit of Nature, but two in the same place doesn't seem probable.

>Wonder if they have found any broken leg
> bones?

I went through a number of media reports, most were carbon copies with few differences. Information is sparse on this one. Alleged cut marks, but again, no stone tools.
The pit dimensions would equal 60,000 cubic feet of dirt removed. I wonder what happened to all that dirt? Looks like another wait and see find.