Formerly owned by S.D. Mitchell (who operated a museum here), this spectacular site was formed 12,000 years ago when post-glacial meltwater eroded the sandstone bedrock, resulting in a steep-sided gorge. The Glen supports one of the few maple-basswood climax forests in Green Lake County and its steep geography creates its own microclimate. The unique geological formations and the spring-fed stream, Glen Creek, are part of a high-quality corridor that supports outstanding biodiversity. Due to the unique sensitive characteristics of this property public access is limited to two guided tours annually.