Edgemont in Fall River County, South Dakota — The American Midwest (Upper Plains)

155mm GPF Cannons

Photographed by Mark Parker, June 30, 2025

1. 155mm GPF Cannons Marker

Inscription.

These 155mm GPF cannons of French design could fire a projectile 10-12 miles at a rate of two rounds per minute. This design was used by 10 different countries, including the US, in two World Wars (1917-1945). These surplus cannons were acquired from the former Black Hills Ordnance Depot at Igloo, SD, 8 miles south of Edgemont in 1946.

Topics. This historical marker is listed in these topic lists: War, World I • War, World II. A significant historical year for this entry is 1917.

Location. 43° 17.889′ N, 103° 49.498′ W. Marker is in Edgemont, South Dakota, in Fall River County. It is at the intersection of 2nd Avenue (South Dakota Route 471) and G Street, on the right when traveling north on 2nd Avenue. The marker is located at Edgemont City Park. Touch for map. Marker is at or near this postal address: 1948 2nd Ave, Edgemont SD 57735, United States of America. Touch for directions.

Regionally, this marker is in West River.

It is also in the American Black Hills,

in the Lewis & Clark Corridor,

on the prairies,

and on the Northern Plains.

Globally, it is in North America,

the Western Hemisphere,

the Western World,

and the Anglosphere.

Historically, it finds itself in what was once Rupert’s Land

and also the Louisiana Purchase.

Other nearby markers. At least 8 other markers are within 4 miles of this marker, measured as the crow flies: Petrified Tree (here, next to this marker); George S. Mickelson Trail (a few steps from this marker); Teddy Roosevelts's Visit to Edgemont (within shouting distance of this marker); Edgemont: Where the Trail Begins (within shouting distance of this marker); Edgemont Covered Bridge (within shouting distance of this marker);

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Siding 7 (approx. 0.8 miles away); Cheyenne River Crossing (approx. 0.8 miles away); Camp Collier (approx. 3.6 miles away). Touch for a list and map of all markers in Edgemont.

More about this marker. The cannons are at opposite ends of City Park.

155mm GPF Cannons Marker with the cannon to the north in the background image. Click for full size.

Photographed by Mark Parker, June 30, 2025

2. 155mm GPF Cannons Marker with the cannon to the north in the background

155mm GPF Cannon at the north end of City Park image. Click for full size.

Photographed by Mark Parker, June 30, 2025

3. 155mm GPF Cannon at the north end of City Park

155mm GPF Cannon at the south end of City Park image. Click for full size.

Photographed by Mark Parker, June 30, 2025

4. 155mm GPF Cannon at the south end of City Park

Credits. This page was last revised on July 5, 2025. It was originally submitted on July 2, 2025, by Mark Parker of Hickory, North Carolina. This page has been viewed 132 times since then and 26 times this year. Photos: 1, 2, 3, 4. submitted on July 2, 2025, by Mark Parker of Hickory, North Carolina. • J. Makali Bruton was the editor who published this page.