At 8.6 miles, this trail belongs to the longer ones in the park. It will take you through the Lava Beds wilderness to the Skull Cave.
More information http://www.nps.gov/labe/planyourvisit/upload/LAVA%20BEDS%20TRAILS.pdf
Address 15343 Boulder Creek Rd, 91916, United States
Coordinates 32°59'4.34" N -116°40'37.956" E