• Overlooking Chetro Ketl

    Chaco Culture

    National Historical Park New Mexico

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  • Kin Bineola and Kin Ya' a Great Houses CLOSED

    There is no public access.

  • Reservations required to attend equinox sunrise program

    To attend the equinox sunrise program on Monday, September 22 call the visitor center at 505-786-7014. Program will be limited to 100 participants.

Mortar Repair

Original mortar, once protected by upper story roofs or wall plasters, is now exposed and suffers erosion by snow melt and precipitation. To repair deteriorating mortar, the first step is to analyze the original mortar to identify its particular texture, color, and composition. Next, the preservation staff documents the existing architectural elements and develops mortar with similar characteristics. Eroded mortar is replaced with new mud, an important and tedious task, but one that is effective in keeping the masonry walls sound and structurally solid to resist the weather and visitor use.

 
Repointing
NPS employee Harold Suina repointing a section of wall
NPS Photo

Did You Know?

Photo of Chaco Wash

The climate of Chaco Canyon 1,000 years ago was very similar to the climate in the park today, with annual precipitation of only eight to nine inches. The Puebloans constructed water control features like dams, canals, and headgates for farming in such a dry environment.