The Chocolate Hills are Bohol's most famous tourist attraction. It was also it's famous tourism symbol long before the tiny primate, tarsier.
An unusual geological formation, the Chocolate Hills form a rolling terrain of haycock hills – mounds of a generally conical and almost symmetrical shape. Estimated to be from 1,268 to about 1,776 individual mounds, 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. These unique mound-shaped hills are scattered by the hundreds throughout the towns of Carmen, Batuan and Sagbayan.
During the dry season, the grass-covered hills dry up and turn chocolate brown. This transforms the area into seemingly endless rows of "chocolate kisses". The branded confection is the inspiration behind the name, Chocolate Hills.
The Chocolate Hills are featured in the provincial flag and seal to symbolize the abundance of natural attractions in the province. The famous hills had placed the province in the tourism map long before the beautiful stretches of white sand beaches made Bohol famous as well.
Four legends explain the formation of the Chocolate Hills. The first tells the story of two feuding giants who hurled rocks, boulders, and sand at each other. The fighting lasted for days, and exhausted the two giants. In their exhaustion, they forgot about their feud and became friends, but when they left they forgot to clean up the mess they had made during their battle, hence the Chocolate Hills.
A more romantic legend tells of a giant named Arogo who was extremely powerful and youthful. Arogo fell in love with Aloya, who was a simple mortal. Aloya's death caused Arogo much pain and misery, and in his sorrow he could not stop crying. When his tears dried, the Chocolate Hills were formed.
The third legend tells of a town being plagued by a giant carabao, who ate all of their crops. Finally having had enough, the townsfolk took all of their spoiled food and placed it in such a way that the carabao would not miss it. Sure enough, the carabao ate it, but his stomach couldn't handle the spoiled food, so he defecated, leaving behind him a mound of feces, until he had emptied his stomach of the food. The feces then dried, forming the Chocolate Hills.
The last legend is about a gluttonous giant named Miguel that eats everything in his path. One day he came to a plain. He saw a beautiful young woman named Adrianna. To win her affection, he needed to lose weight. So he excreted everything he ate. In the end, his fecal matter covered the land and he won Eng's affection.