Approximate location — plotted from published sources, not a site visit, and not a guarantee of access.
Anniversary Narrows is a Muddy Mountains slot reached via Callville Wash North Road inside Lake Mead NRA. Hikers follow a wash into high walls with dryfalls and occasional ladders before looping toward open desert. Park at the signed 2WD dirt lot off Northshore Road; high clearance helps beyond the lot after storms.