Ruins from AD 500 - 1000,[43] also known as the Mitchell Springs Ruin Group, is a Northern San Juan pueblo. It was added to the National Register of Historic Places in Montezuma County in 2001.[18] Ruins of 9 medium-sized pueblos from the Basketmaker II period to late Pueblo III. Occupying up to 1,000 people the pueblo had a total of 300 rooms, 35 kivas and towers.