
Bass Asbestos Mine: William Bass's trail-and-tram asbestos claim
A trail-builder’s side-hustle asbestos claim in Hakatai Canyon, sold for wartime prices in 1917-1918, now a 500-foot no-entry buffer in the park’s rulebook.

A trail-builder’s side-hustle asbestos claim in Hakatai Canyon, sold for wartime prices in 1917-1918, now a 500-foot no-entry buffer in the park’s rulebook.

A river-mile 136.9 waterfall hike stays open, but the slot canyon below it is closed by federal rule to protect a site the Kaibab Band of Paiute Indians calls sacred.

A fenced lagoon plant off Cedar Mountain Road is the least-documented wastewater site in the park. Here’s exactly what is and isn’t public.

NPS has counted 75 abandoned mine features across 38 sites in the park, part of a 37,050-feature nationwide problem. Here’s the public accounting.

John Hance mined asbestos near Sockdolager Rapids, sold out in 1901, and became famous for storytelling instead. The river corridor there is now a hard closure.

A source-checked guide to the canyon’s water, power, communications, mines, protected places, river rules and working government sites, without a locator map.

All 49 numbered closures from Grand Canyon’s official compendium, organized by district with the stated reason and CFR citation for each.

From rail tank cars and one-call phone lines to mine cleanup and the 2026 water emergency: a dated guide to the systems behind the scenery.