City Cast Las Vegas logo

The Creation of an Underwater Ghost Town

Posted on July 28, 2023   |   Updated on September 30, 2025
Sonja Cho Swanson

Sonja Cho Swanson

A black and white photo of the ruins of a building surrounded by rising lake waters.

A photo of the rising waters of Lake Mead covering the ruins of St. Thomas taken around 1938 (Elbert Edwards Photograph Collection, 1852-1991/UNLV Special Collections)

City Cast Las Vegas lead producer Sonja Cho Swanson drops some knowledge on a piece of Nevada history.

Nevada has hundreds of ghost towns (more ghost towns than populated ones, in fact), but only one of them is underwater — at least until recently: The town of St. Thomas, a former Mormon settlement founded in 1865 on the route between L.A. and Salt Lake City.

At its peak, St. Thomas had 500 residents, a post office, and even an ice cream parlor. In September 1935, President Franklin D. Roosevelt formally dedicated Boulder Dam, and Lake Mead began to fill up. By 1938, when this photo was taken, the Lake still hadn’t reached capacity — it would take seven years to fill.

Well in advance of dam construction, the federal government told the residents of St. Thomas that they would need to move and would be reimbursed for their homes. The government-owned most of the town by 1932. But one resident held out: Hugh Lord, who owned a garage, waited until the waters were high enough for him to step into his boat from the front door. Then he set fire to his house and left.

There’s one more town that was covered by the rising waters of Lake Mead: An archaeological site near Overton called the Pueblo Grande de Nevada, or sometimes the “Lost City,” a complex of homes, agricultural sites, salt caves, and larger buildings (one had over 100 rooms). The site had been home to several successive groups of Native Americans, including the Anasazi, the Pueblo, and eventually the Paiutes.

For unknown reasons, the site was abandoned hundreds of years ago, but archaeologists have been studying the site for the last 100+ years. In fact, they were working frantically until the last minute before Lake Mead’s waters covered the site. Today, the receding waters of the lake have revealed the site once again, now badly damaged by erosion, but researchers are using tech like drones and 3-D imaging to learn what they can about the Lost City.

see more:history

Share article

Hey Las Vegas

Stay connected to City Cast Las Vegas and get ready to join the local conversation.

Can't subscribe? Turn off your ad blocker and try again.

The latest in Las Vegas

Keep It Local from City Cast Las VegasJune 26

Turn Your Closet Into a Store

Looking for the best vintage clothing in Las Vegas? Visit Republic Goods in the Arts District to shop pre-loved fashion, rare finds, and...

The front of Republic Goods - an olive-painted building with a rose mural.
Keep It Local from City Cast Las VegasJune 26

High-End Style Without the High-End Price Tag

Discover Vegas' booming vintage and consignment scene! Shop consciously, find unique designer fashion, and give second life to old treasu...

A bright, open store with clothing racks along the walls and a long wood bench running down the center.
Las Vegas, ExplainedJune 19

Take This Week's Las Vegas News Trivia Quiz

Ready for a challenge? Take our weekly quiz, based on the news and stories of this past week in Las Vegas.

The Fremont Street Experience and a street light.
Las Vegas' BestJune 18

Father's Day Freebies in Las Vegas

Dads, step-dads, and granddads get to enjoy a few free perks for Father's Day on June 21.

A bar and lounge.
Las Vegas, ExplainedJune 15

Where to Watch July 4 Fireworks in Las Vegas 2026

Your guide to fireworks shows and the legalities of setting off your own in Clark County. Spoiler: It's complicated.

Fireworks erupting above Downtown.
Las Vegas' BestJune 8

Off-Beat Summer Road Trips From Las Vegas

Fill up the tank, check those tires, and hit the highway for a few not-so-obvious vacation destinations in the Southwest.

Victorian architecture in Carlsbad.
Food & DrinkJune 4

Our Top Picks for Restaurant Week

The City Cast Las Vegas team shares our top picks for the most interesting and attractive prix fixe menus during Restaurant Week.

A bowl of rigatoni.
Las Vegas, ExplainedJune 2

Where to Watch FIFA World Cup Soccer in Las Vegas

The FIFA World Cup 2026 is June 11-19. So we've narrowed down the best places to watch soccer in Las Vegas.

Mexico and Costa Rica face off at Allegiant Stadium during the 2025 FIFA Club World Cup.