Fossil Lake Trail | Kemmerer

Fossil Lake Trail is a geological site located near Kemmerer, Wyoming, USA. It preserves a significant deposit of Eocene epoch fossils.

Visual Characteristics

The trail traverses an area characterized by sedimentary rock formations, primarily shale and limestone. The exposed rock faces reveal distinct layers indicative of ancient lakebed deposits. Vegetation is sparse, consisting of sagebrush, grasses, and scattered juniper trees.

Location & Access Logistics

The trailhead is situated approximately 10 miles (16 km) west of Kemmerer, Wyoming, accessible via Wyoming State Route 233. The turnoff is marked by a sign for Fossil Butte National Monument. Parking is available at a designated lot adjacent to the trailhead. No public transport services this location.

Historical & Ecological Origin

Fossil Lake, also known as the Kemmerer Fossil Beds, formed approximately 50 million years ago during the Eocene epoch. This ancient lake was part of a large freshwater system that supported diverse aquatic and terrestrial life. The rapid burial of organisms in the fine-grained sediments of the lakebed led to exceptional fossil preservation, particularly of fish, insects, and plants.

Key Highlights & Activities

Visitors can walk the designated trail to observe exposed fossil layers. The primary activity is geological observation and photography of the fossiliferous rock formations. Educational signage along the trail provides information on the site's paleontological significance.

Infrastructure & Amenities

Restrooms are available at the Fossil Butte National Monument Visitor Center, located approximately 2 miles (3.2 km) from the trailhead. There is limited natural shade along the trail. Cell phone signal is generally unreliable in this area.

Best Time to Visit

The best time for visiting is during the late spring and early fall months (May-June and September-October) to avoid extreme summer heat and winter snow. Mid-morning or late afternoon offers optimal lighting conditions for observing rock strata details.

Facts & Legends

The Fossil Lake area is renowned for its exceptionally well-preserved Eocene fish fossils, including the Green River Formation's famous fish. A unique aspect is the presence of fossilized insects, providing insights into the ancient insect populations of the region.

Nearby Landmarks

• Fossil Butte National Monument Visitor Center (2km Northeast)
• Kemmerer City Museum (16km East)
• Flaming Gorge National Recreation Area (approx. 70km South)