The Discovery Pavilion of Chatfield State Park is operated by the Audubon Society of Greater Denver. The Audobon Discovery Loop trail can be 2.5 miles or less, depending on how many ponds you wish to walk around. Near the education center, there are interpretive trail makers, accessed by scanning with a smart phone. The trail as described in Pam and Dave Irwin’s Book “100 Best Denver Area & Front Range Day Hikes”. It is not wheelchair accessible and there are a few steps over water bars. There are a lot of social trails and we found it somewhat confusing. I veered off on one of these side trails and found a big pile of bear scat. There is a lot of poison ivy beside the trail.