Monks Mound at Cahokia Mounds State Historic Site (Collinsville, Illinois):
...and the Weldon Spring Radioactive Waste Disposal & Storage Cell, formerly home of the Weldon Spring Ordnance Works & Chemical Plant (Saint Charles County, Missouri):
A quick comparison of the two sites:
- Monks Mound is approximately 100 feet tall, the Weldon Spring Disposal Cell is about 75 feet tall.
- The base of Monks Mound cover about 13.1 acres, roughly the size of the base of the Great Pyramid of Giza.
- The base of the Disposal Cell covers about 45 acres and stores approximately 1.5 million cubic yards of radioactive waste.
- Construction of Monks Mound by the Cahokia Indians began 900-950 A.D. and was completed around 1200 A.D. It was built so their leader could live closer to his relative, the Sun.
- Construction of the Disposal Cell began in 1997 and was completed in June 2001.
A look up the staircase to the first terrace of Monks Mound. Monks Mound consists of four terraces and gets its name from Trappist monks who planted gardens on the terraces and operated a nearby mission long after the Cahokia Indians had left.
A view of the staircase that leads you halfway to the summit of the Weldon Spring Disposal Cell.
Looking east from between the second and third terraces of Monks Mound - the green-ness of the land is absolutely beautiful.
A view of the Disposal Cell from halfway up the trail to the summit - the landscape is quite alien.
A view from the summit of Monks Mound. Downtown Saint Louis and the Gateway Arch can be seen in the background.
The view from the top of the Weldon Spring Disposal Cell may not be as impressive, but you can see the steeple of Saint Joseph Catholic Church, where Christi and me were married! (Look for the white triangle in the center of the photo)
The fourth and highest terrace of Monks Mound.
The summit of the Disposal Cell. Four large plaques offering a history of the World War 2 era ammunition plant that once stood here, history of the local area, timeline of events related to the disposal cell and clean-up, and information of the cell itself are located here. For example:
Here is a cross-section of the Disposal Cell. The waste housed within the cell includes: dinitrotoluene (DNT), trinitrotoluene (TNT), uranium, radium, thorium residue, and "Agent Orange," a deadly herbicide that was produced here by the U.S. Army for use in the Vietnam War. Yum!
This "zoom" view from Monks Mound shows you Midtown Saint Louis - the tall skyscraper in the center is the Continental Life Building (please see my previous post by clicking here) and the light green-topped building on the center-left is Griesedieck Hall, a Saint Louis University dormitory.
This "zoom" view from the Disposal Cell isn't as impressive, but you can see Chesterfield Mall, located far across the Missouri River from here, very clearly.
It is quite fascinating how different these two mounds are in their purpose, but still very impressive in their man-made nature. One mound was built for a spiritual purpose, the other for waste. Thankfully our nickname "Mound City" is derived from the former and not the latter.