Salmon Ruins

Salmon Ruins is an ancient Chacoan and Pueblo site located in the northwest corner of New Mexico. Salmon was constructed by migrants from Chaco Canyon around 1090 CE, with 275 to 300 original rooms spread across three stories, an elevated tower kiva in its central portion, and a great kiva in its plaza. Subsequent use by local Middle San Juan people (beginning in the 1120s) resulted in extensive modifications to the original building, with the reuse of hundreds of rooms.
-from Wikipedia