
Big Nasty Trail
A loop trail, Big Nasty is 2 miles (3.2 km) long.
Named after a brush-covered rough lava area just to the
north? ?it is big and it is nasty!? From the Mammoth
Crater/Hidden Valley pullout, the trail starts along the
crater rim. Turn left from the Mammoth Crater Trail.
From the I-5 corridor, take U.S. 97 north at Weed to a right turn on California Hwy. 161, also known as Stateline Road, as shown by large signs. Travel east on CA 161 through the Lower Klamath National Wildlife Refuge to Hill Road. Turn right on Hill Road at the Westside Market, following monument signs. Travel south on Hill Road 10 miles until you enter Lava Beds National Monument.
From the Klamath Falls area, take Oregon Hwy. 39 south approximately 20 miles until it enters the town of Merrill, OR. Approximately one mile south of Merrill, turn right (south) on Malone Road. Travel south on Malone Road approximately 2 miles until you reach Stateline Road 161. Turn left (east) and then take the immediate right at Westside Market onto Hill Road. Travel south on Hill Road 10 miles until you enter Lava Beds National Monument. You will pass the visitor center for Tulelake National Wildlife Refuge on your way to the monument.
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