Platte Mound "M" - Platteville, WI
N 42° 45.812 W 090° 24.400
15T E 712192 N 4737817
In 1836, students of the Platteville Mining School who had seen a large letter M in Colorado traced a large M in the snow on Platte Mound, 4.5 miles west of the school. The next year faculty and students constructed the largest letter M in the World
Waymark Code: WM5J2F
Location: Wisconsin, United States
Date Posted: 01/11/2009
Views: 10
Check out the letter on Map Quest! (
EN:M:/e' target='_blank' rel='nofollow'>visit link)
This letter is incredibly visible from a distance. I have uploaded a photo I took from 13 miles away. I am sure I could have seen it from further away if I could have found the right vantage point.
The letter is also featured in murals in the town of Platteville.
From Wikipedia (
visit link) :
"The Platte Mound M is the letter "M" written using whitewashed stones on Platte Mound about four miles east of Platteville, Wisconsin. It is the largest letter "M" in the world. The letter is 241 feet (73 m) high, 214 feet (65 m) wide, with legs 25 feet (7.6 m) wide.
University of Wisconsin-Platteville students Raymond Medley and Alvin Knoerr worked at a Colorado mine in the summer (middle) of 1936. They saw a large letter "M" on the side of a hill in Colorado which signified mining. They felt that a larger "M" should be written on the Platte Mound to represent Platteville miners. They created the first letter on the mound that winter (late that year). They wrote the letter "M" in deep snow, and it was visible for several weeks as a cold spell had hit the area. The letter "M" was selected for the School of Mines at the university. Several students went hiking in the same spot after the snow melted, and used large rocks to build one leg of a letter "M" while resting. The unfinished letter was so prevalent that engineering department head H. B. Morrow declared a field day for the department personnel and engineering student to work on the "M". Seniors surveyed the letter to make sure that it was larger than the "M" at Colorado. Underclass constructed the letter using borrowed picks, crowbars, and wheelbarrows from a local CCC camp. The letter was constructed from limestone found on the mound. Morrow and other professors drove several miles away to inspect the work from a distance, and they recommended changes to counteract distortion from the slope of the mound. Work was completed about six months later for the school's 1937 homecoming celebration. The letter was celebrated at that year's homecoming on October 16, 1937. The letter was lit from a torch which was relayed 4.5 miles (7.2 km) from the school's Tech building. The illuminated letter was visible from 28 miles away.
Before 1940, the letter was only lit for homecoming. After World War II, the tradition changed to include lighting the letter on the evening of the spring Miner's Ball. The letter was neglected during World War II since few undrafted/unenlisted men were available. Female students noticed the general disrepair of the letter. This lead to a custom of cleaning the letter in the latter part of the year (fall) and a whitewashing in spring in April on the Thursday before the Miner's Ball. Life magazine reporter Francis Miller attended the April 29, 1949 lighting. He witnessed 250 quart cans with corncobs lit around the outline of the letters. It took 23 minutes to relay the torch to the mound. The story appeared in Life magazine on May 23, 1949.
Platte Mound is a one mile long and half mile wide mound which rises 450 feet (140 m) feet above its surroundings. The college had received permission to construct the letter from property owner William Snow. A Mr. Clausen from Racine, who later purchased the land, then donated it to the Board of State College Regents. The letter has been maintained by engineering students at the university since the mining engineering department closed in the 1990s. The Theta Tau engineering fraternity receives about $2,000 each year for maintenance."