It was discovered in 2009 by local archeologist Dennis Miller who found a depression of about 20 feet (6.1 m) in diameter, and a maximum depth of 24 inches (61 cm) below the surrounding area.
The earthlodges were dwellings that were composed of four central support posts, surrounded by shorter outer wall posts, with wattle and daub walls and roof.
The depression in the earth was caused by the natural decay and caving-in of the earthlodge itself.
The site was listed on the National Register of Historic Places in 2010.
This article about a property in Mills County, Iowa on the National Register of Historic Places is a stub.