• Black Hill Regional Park

• Blockhouse Point Conservation Area

• C & O Canal National Historical Park

• Cabin John Stream Valley Park Trail

• Catoctin Mountain Park

• Cedarville State Forest

• Great Seneca Stream Valley Park

• Hoyles Mill Conservation Park

• Little Falls Stream Valley Park Trail

• Mckee-Beshers Wildlife Management Area

• Meadowside Nature Center

• Monongahela National Forest

• Other Locations

• Potomac Overlook Regional Park

• Rachel Carson Conservation Park

• Red Rock Wilderness Overlook Regional Park

• Scotts Run Nature Preserve

C & O Canal National Historical Park

The Chesapeake and Ohio Canal parallels the Potomac River for over 180 miles, from the port in Georgetown to Cumberland, MD. Used primarily to transport coal, the canal was in operation from 1850-1924. It was acquired by the federal government in 1938 and became a National Park in 1971. In addition to the C & O National Historical Trail, the park offers many other recreational opportunities including rock climbing, horseback riding, and camping.

1. ischnoderma resinosum Along the C & O Canal Towpath at Riley's Lock Seneca, Maryland	2. boletus bicolor Along the C & O Canal Towpath at Riley's Lock Seneca, Maryland
3. Along the C & O Canal Towpath at Riley's Lock Seneca, Maryland	4. Along the C & O Canal Towpath at Riley's Lock Seneca, Maryland
5. amanita vaginata-young Along the C & O Canal Towpath at Riley's Lock Seneca, Maryland	6. amanita vaginata-mature Along the C & O Canal Towpath at Riley's Lock Seneca, Maryland
7. Along the C & O Canal Towpath at Riley's Lock Seneca, Maryland