Citadel Sink with the San Francisco Peaks in the background, as seen from Citadel Ruin.

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This limestone sink in the foreground was formed when the roof of a cavern in the Kaibab Limestone collapsed, probably plugging the outlet and allowing a pond to form. There is another sink 2 miles (3.2 km) to the south, and ruins are clustered around its edge also. The thick Kaibab Limestone forms the greatest portion of the walls of the sinkhole. It is stained by seepage from the overlying red Moenkopi Sandstone, a thin layer of which can be seen at the base of the black lava which forms the surface.

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You are now entering the Citadel by an entrance utilized by the Indians of yesteryear. Note the loop hole guarding this entrance.

Ground plan of the visible walls of the unexcavated Citadel.

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This ruin has never been excavated. It might tell a story of peaceful farming people finding it necessary to defend themselves from neighboring tribes. Around the depression in the middle there is space for an estimated 30 rooms; the outlines of some can readily be seen. Approximately 50-60 persons probably lived in this village.