According to Patrick's map, Mound 23 is a small, conical mound (comparable in size to Mound 19) directly north of Mound 22. It appears on the UWM Map with a base elevation of 129 meters (423.2 feet) between N330-360 and E834866. That indicates a north-south dimension of 30 meters (98.4 feet) and an east-west dimension of 32 meters (105 feet). The height shown by the UWM Map is 1.1 meters (3.6 feet). The earlier McAdams, Thomas, and Peterson-McAdams maps are not helpful in identifying Mound 23. Mound 23 is a conical mound that is apparently related to Mound 22. There are no records of excavations in Mound 23.