David Milton Crouch, 27, disappeared on August 31, 1997, while hiking with three friends and a guide in Bridger-Teton National Forest near Pinedale, Wyoming. He separated from the party to go alone to Island Lake at about 10,500 feet and did not return to base camp by nightfall. His companions reported him missing the next morning.

Crouch had no supplies with him when he split from the group — not even a coat or gloves — and nighttime temperatures in the area were well below freezing, making survival under those conditions unlikely. Extensive searches and search and rescue efforts turned up no trace. He was an avid bicyclist who owned a bike shop with his wife in Stevensville, Maryland, at the time.

No leads have emerged and he is presumed lost or injured in the wilderness. If anyone hiked near Island Lake or the routes used by the group that day, did anything unusual stand out to you?