Los Gemelos

Lonely Planet review

The twin craters of Los Gemelos, which are actually sink holes, not volcanic craters, are a highlight of the Santa Cruz highlands. Surrounded by Scalesia forest, vermilion flycatchers are often seen here (as well as short-eared owls on occasion). Although the craters lie only 25m (82ft) and 125m (410ft) on either side of the road, they're hidden by vegetation - ask your driver to stop at the short trailhead.