It also features the image of the blood compact.
The Sandugo is depicted in both the provincial flag and the official seal of the government in Bohol. ' Sandugo' is a Visayan word which means 'one blood'. This is considered the first treaty of friendship between the Spaniards and Filipinos. The Legazpi-Sikatuna Blood Compact or Sandugo ( Spanish: Pacto de Sangre) was a blood compact, performed in the island of Bohol in the Philippines, between the Spanish explorer Miguel López de Legazpi and Datu Sikatuna, chieftain of Bohol, on March 16, 1565, to seal their friendship following tribal tradition.