St. Thomas, Submerged ghost town in Lake Mead National Recreation Area, United States.

St. Thomas is a submerged ghost town in Lake Mead National Recreation Area, with remnants visible in the reservoir's waters. Stone foundations and chimneys mark where streets and buildings once stood in this abandoned settlement.

Mormon pioneers established this settlement in 1865, believing it was within Utah territory until a survey revealed its actual location in Nevada. The town was later submerged by the rising waters of Lake Mead.

St. Thomas was named for Thomas Smith, the Mormon leader who founded it in 1865. It became the seat of Pah-Ute County, and in 1869 John Wesley Powell's first Colorado River expedition ended here. The cemetery was later moved to Overton, where an interpretive center keeps research on the Muddy River settlement.

The ruins are accessible by foot but require an initial drive on a dirt road followed by a steep descent to the lakeshore. The walk loops through the site, allowing visitors to explore the various structures and their remains.

St. Thomas was the endpoint of John Wesley Powell's first Colorado River expedition, the Powell Geographic Expedition of 1869. The town later became the seat of Pah-Ute County. Its cemetery was moved to Overton, Nevada, where an interpretive center keeps research on the Muddy River settlement going.