“A cool trail with a singletrack section over the lava flow from a 1909 eruption with regenerating pine forest.”
— Lost Justpastnowhere
This trail goes from the Pista Canal de Vergara
to the outskirts of the town of San José de los llanos (St. Joseph of the Plains).
The trail traverses some of the lava flows from an eruption of the el Chinyero volcano in 1909. Fortunately, the eruption stopped short of the towns of Las Manchas and San José de los llanos.
The beginning and ends of the trail are doubletrack, but there is a singletrack section in the middle (roughly from mile two to mile three) that traverses the actual lava flow.
At this point, you're riding on rock that is only about 100 years old! This is definitely the highlight of this trail and the Montañas Negras (Black Mountains)
loop. It's almost surreal to see the new pine trees growing seeming from the black lava rock with very little other vegetation.