The postcard shows the Chocolate Hills. The Chocolate Hills, a rolling terrain of haycock hills, are an unusual geological formation that are scattered throughout the towns of Carmen, Batuan and Sagbayan in Bohol. During the dry season, the precipitation is inadequate such that the grass-covered hills dry up and turn chocolate brown. This transforms the area into seemingly endless rows of "chocolate kisses," hence the name.
Estimated to be at least 1,268 to about 1,776 individual mounds spread over an area of more than 50 sq. km., these cone-shaped or dome-shaped hills are actually made of grass-covered limestone. The domes vary in sizes from 30 to 50 metres (98 to 160 ft) high with the largest being 120 metres (390 ft) in height.
The Hills have been declared the country's third National Geological Monument and proposed for inclusion in the UNESCO World Heritage List.
Chocolate Hills Wikipedia Entry