Tent rings and old food caches

These photos are also from July 6.  There are some old tent rings out near the old air strip that people don't remember seeing before, I think they are just in a corner of the field that people didn't go strolling on very often.  We had a look at them.  I think they said they were probably from the Dorset people:

These are probably old food caches from around the same time: