The low ridge with the Three Rivers petroglyphs is located near a small cluster of early pit houses and later surface houses that are just above a small stream which today is dry most of each year. The plan of the partially restored surface house includes an alcove where the farmer inhabitants stored the corn and squash that they grew. Although both crops were originally developed in south-central Mexico, it is not known how the Mogollon acquired them and to what extent, if any, they were related to the distinctively different culture to their south.
This early pit house was merely a hole in the ground with a roof of wood beams and thatching over it.
The later surface house which was all above ground has substantial stone walls and a similar roof.
The surface house has an separate alcove that was used to store food.