The Agusan Valley was settled by a variety of cultural communities like the Manobos, Mamanwas and Higaonons. Archeological excavations in the lower Agusan valley plains have uncovered evidence of strong relationships between the region and the Southeast Asian states. A golden image of Javan-Indian design unearthed in the 1920s and molten jars uncovered in Prosperidad are indications that the region had commercial and cultural ties with the coast.
The Augustinian Recollects established a mission in Linao, in the vicinity of present day Bunawan, in 1614. However, mission work was hampered by the hostility of the surrounding Manobo tribes. At the height of the power of the Sultanate of Maguindanao in the mid-17th century, the Manobos of the Agusan Valley were in alliance with Sultan Kudarat. Linao was attacked several times during the 1629 Caraga Revolt and the 1649 Sumuroy Revolt. Nevertheless, the Recollects were able to establish themselves in their mission work, and remained there until the middle of the 19th century.
In the late 19th century, the Recollects (under protest) turned over many of their mission territories, including those in the upper Agusan region, to the reconstituted Jesuit order (the Jesuits had been banned by Papal edict in the 1760s, and ejected from the Philippines in 1768). Missionary work was interrupted by the Philippine Revolution when the Jesuits either fled or were arrested by revolutionaries. During the American occupation, lumbering became an important activity in Agusan del Sur. Visayan migrants settled in the cleared plains, pushing indigenous communities farther into the mountainous slopes.
The territory of Agusan del Sur was governed as part of the province of Caraga during most of the Spanish period. In 1860, it was placed under the comandancia of Butuan, a district of the province of Surigao. In 1914, the province of Agusan was created by the American government.
In the Second World War, Japanese troops landed in the province of Agusan in 1942 and occupied the province until their defeat by combined U.S. and Philippine Commonwealth troops as well as recognized guerilla units in 1945 at the Battle of Agusan.
The province of Agusan del Sur was born on June 17, 1967 under Republic Act No. 4969 providing for the division of the province of Agusan into Agusan del Norte and Agusan del Sur. In January 1970 the first set of provincial officials assumed office after the provincial election of November, 1969. The same law provided that the capital of Agusan del Sur be the municipality of Prosperidad. The Government Center has been set up in Barangay Patin-ay.
Rufino C. Otero was elected as the first Provincial Governor and Democrito O. Plaza the first Congressman in the election of November 1969. The term of office of Congressman Democrito O. Plaza would have continued until December 1983 had it not for the proclamation of Martial Law on September 21, 1972, which in effect abolished the Congress. When the Interim Batasang Pambansa was convened in 1978 after almost a decade of absence under the martial Law, Edelmiro Amante represented the province in the National Assembly.
Best Spots in Agusan Del Sur
Bega Falls
The hidden treasure of Agusan del Sur,located in Brgy Mabuhay, Prosperidad,a haven for mountain trekkers, adventure lovers,environmentalists and bio-diversity researchers. You can find the Bega Falls by mountain or river trekking from the Baranggay proper.Once within the realm of the falls, the three-tiered main falls,twin falls,torqouise-green and pristine waters will surely soothen your weary soul. Press onto the whole length of the river channel and you will be lured into the exotic enchantment of jungle paradise.And be sure to know your numbers because you will not be counting only one falls but 18 FALLS, plus the lagoons, cascades,wild flora and fauna, hardwoods and exotic birds,all cradled by a single channel of the river Bega.
Gibong River
The Gibong River is a stretch of water with a view of unharmed vegetation in its banks. The river is the only gateway to Binaba Falls. It is also the source of water supply irrigating some 60 square kilometres of rice fields of three municipalities in the province.
Binaba Falls
The Binaba Falls is situated in the heart of a jungle-like foot of the mountain, with clear waters emitting from the springs, cascading onto boulders of limestone. The falls offer a very refreshing bath after a fifteen-minutes ride on a motor-banca from the mini wharf of Prosperidad town passing along the Gibong River.But the previous municipal administration introduced tourism development related project which damages the topography and altered the landscape.Gone were the cascades that was replaced by a concrete steps leading to swimming pool on a narrow ridge. The need to increase the town's water supply also led to the construction of concrete reservoires adding destruction to the natural landscape.
Tugonan Falls
The name derived from the word "Tugon" meaning a promise, Tugonan waterfalls in Barangay San Lorenzo of Prosperidad Town offers a natural wonder where one will surely promise to come back after a visit. The towering trees on its vicinity with wild ornamental plants and orchids hanging on branches, one could have dreamed having gone to paradise.