Arpa | ErrorZap

Cutaway illustration of a Grand Canyon river-corridor bench showing a buried archaeological site layer, with labeled arrows for windblown sand, an eroding exposed wall, and a fenced closure sign above on the rim

Archaeological-Site Protection Throughout Grand Canyon

4,000+ documented sites, the federal laws that guard them, and the dam upstream slowly undoing decades of natural preservation.

Illustrated diagram of a government document with several paragraphs covered by black redaction bars, a magnifying glass hovering over labeled arrows pointing to location, character, and ownership fields

Why Grand Canyon Cultural Closures Give No Details

The federal laws — ARPA, NHPA Section 304, NAGPRA — that make withholding site details legal, not evasive.