Part of the highlands that can be visited from the road are these twin sinkholes (not volcanic craters), surrounded by scalesia forest. Vermilion flycatchers are often seen here, as are short-eared owls, on occasion. Los Gemelos are about 2km beyond Santa Rosa on the trans-island road. Although the craters lie only 25m and 125m from either side of the road, they are hidden by vegetation, so ask your driver to stop at the short trailhead.
