It seems that the one on the right has been used extensively for cooking.  It also has the best in tact roof.
The second one in the middle is smaller and looks like a gathering room with alcoves
The third on the left only has walls remaining.
These three ruins are located beneath a large cliff overhand in a bend in the stream bed.  I find it amazing that over the centuries the stream has not washed them away.

Please do not go inside nor step open the ruins.  Just take some nice photos..