One of Bohol's premier tourist attractions, and certainly its most hyped, the Chocolate Hills are a series of majestic grassy hillocks that span far into the horizon. The hills get their name from the lawn-like vegetation that roasts to chocolate brown in the driest months (February to July). Their exact origin is still debated, but most scientists believe they were formed over time by the uplift of coral deposits and the effects of rainwater and erosion.
The largest and most visited concentration is 4km south of Carmen, site of the Chocolate Hills Main Viewpoint. For a less touristy experience, there's another range of Chocolate Hills northeast of Sagbayan on the road to Danao.