As you cross the ledge leading to the upper triangle, the invaders' domination manifests itself. The foundations of a Great House cover the spit of land. A retaining wall holds landfill out of which a great Kiva has been dug. Climbing the wall, you can look into the round pit and explore the dozens of rooms that surround an even larger Kiva. Transporting yourself back in time, an army of laborers carries stone and timber and water to the building site.
Skilled masons carve the sandstone that bricks the facades.
Their apprentices climb the scaffolding to the upper stories and dump rubble into the walls' interiors. Architects true the rounding of the Kivas. The overseer urges the work on, planning his report to the Chacoan elite who hold the military or religious magic that binds the pieces together. Still, the motivations remain hidden. The Chacoans seemed to be designing something different here.