The Sulu Archipelago is a series of small volcanic islands which extends in a northeast and southwest direction between the meridians of 119° 10′ and 122° 25′ east, and the parallels of 4° 30′ and 6° 50′ north. It forms a continuous chain of islands, islets, and coral reefs, which connects the peninsula of Zamboanga with the northeastern extremity of Borneo and separates the Sulu Sea from the Celebes Sea. It marks the southern line of communication between the Philippine Islands and Borneo and is probably the chief route of former emigrations and travel from Borneo to Mindanao and the southern Bisayan Islands.
The islands of the Archipelago are so disposed as to form several smaller groups, the most important of which are the following: The Basilan Group, the Balangingi or Samal Group, the Sulu Group, the Pangutaran Group, the Tapul or Siasi Group, and the Tawi-tawi Group.
The Basilan Group is the first on the north and includes the Island of Basilan and fifty-six small adjacent islands, all of which lie north of the parallel of 6° 15′ north and east of the meridian of 121° 19′ east. This group, under the name of Basilan, constituted the sixth district of the politico-military government of Mindanao, organized by the Spanish Government in 1861. Since that date the islands forming this group have not been recognized politically as a part of the Sulu Archipelago.
Basilan is the largest island in the Archipelago. Its northernmost point is about 10 miles directly south of Zamboanga. The island is more or less circular in outline and has a radius approximately 11 miles long. Its area is about 400 square miles. Two prominent headlands projecting, one on the east and one on the west, give the island a maximum length of 36 miles. The greatest width, north and south, is 24 miles. The eastern headland is long and has a picturesque, conical peak, called Mount Matangal, which rises about 648 meters above sea level. This peak is a very prominent landmark, visible to a great distance from all points in the Celebes Sea and in the Straits of Basilan. The western headland is less prominent. It has an isolated peak about 287 meters above the sea, immediately north of the settlement of Pangasa’an. The position of this peak makes it a conspicuous landmark to vessels entering the Straits of Basilan from the Sulu Sea.
The surface of the island is high and hilly. Twenty-three peaks are recognized, forming two distinct series or ranges, central and peripheral. The central region of the island is an elevated tableland, out of which rise a number of peaks forming the central series and ranging from 609 to 1,019 meters above sea level. A thick forest covers this region. The rivers are small and dry up in the dry season. Few Yakans are to be found there, and their houses are isolated and far apart. No cultivation is carried on in the interior. On the outside of this region rises the peripheral series of hills or peaks which lies parallel and near to the coast. With the exception of two, all of these peaks are below 304 meters in height. The drop from this line of hills to the coast is rapid in some places, and in general the shore line is low and swampy and covered with mangrove trees. The three largest valleys in the island are those of Gubawan or Lamitan on the northeast, Kumalarang on the northwest, and Malusu on the west. This region is generally considered fertile, but it has a marked dry season and droughts are not rare.
The island is very rich in timber; all its hills and mountains are forest-clad to their summits. Excellent boats are constructed on the south and west coasts of the island which rival the Tawi-tawi boats in every particular. A few Americans have started hemp and coconut plantations on the north coast, but native cultivation is not extensive and compares very poorly with that of the Islands of Sulu, Tapul, and Siasi. Most of the cultivation on the island is carried on by Yakans, the Samals living chiefly on the products of the sea. The staple products of the soil are rice, tapioca, and corn. Ubi (a kind of tuber used as food), camotes (sweet potatoes), and wild fruits abound. The number of cattle is not inconsiderable, but horses are few. Most of the settlements on the island are on the sea coast and lie on the north and west coasts. The larger ones, beginning at Isabela and going east, are, on the north, Isabela, Patasan or Balaktasan, Malu’ung, Nipa, Lamitan, Tagima, and Kandi’is; on the east, Tambunan, Buhi-lubung, and Ubung; on the south, Amalwi, Giyung, and Mangal; on the west, Libuk, Kabkaban, Kanas, Malusu, and Pangasa’an; on the north, Bulansa, Atung-atung, Batanay, and Panigayan.[2] The prominent chiefs of the island live at Lamitan, Ubung, and Malusu, which form the principal centers of native power. The old name of Basilan was Tagima, so called after the name of the old settlement of Tagima mentioned above.
Isabela may be considered as the capital of Basilan. Its old name is Pasangan, which is still the name of the stream at the mouth of which it is built. The town is situated 4 miles inland, on the narrow channel which separates Basilan from the small island of Malamawi. The channel widens a little at this point and forms an excellent harbor. Under Spanish jurisdiction it was a naval station with a dry dock for gunboats. An aqueduct furnishes the town with fresh water brought from a small stream in the neighborhood. The stone fort Isabel II, built on the hill in 1842, commands both entrances of the channel. It was designed to defend the town against the Moros. The abandonment of the town as a naval station has led to its present decline. An American sawmill planted there has been the chief source of lumber supply for the town of Zamboanga and neighborhood.
The largest islands in this group, excepting Basilan, are Baluk-baluk and Pilas, both of which lie west of Basilan. A narrow channel which lies in the direct route leading from Zamboanga to Jolo separates these two islands. Tapiantana, Salupin, Bubwan, and Lanawan are the largest islands of the group south of Basilan.
The population of this whole group is generally estimated at 25,000. Of these, 15,000 live in Basilan itself. The inhabitants of Basilan proper are Yakans and Samals, while the adjacent islands are occupied entirely by Samals. The Yakans are the aborigines of Basilan and extend farther into the interior than the Samals.
Basilan never enjoyed political independence. Before Spanish rule it was governed by Sulu datus and paid tribute to the Sultan of Sulu. Under the datus, subordinate Samal panglimas[3] and maharajas[4] had charge of the various communities or settlements. The Samals of Basilan are at present stronger than other Samals and enjoy a greater degree of liberty and self-government than their brothers in the Tawi-tawi Group.