Immediately south of the mouth of the south branch of the Rio Grande and rising above the seashore at Linuk is the lofty and picturesque pyramidal peak of Mount Kabalalan. From Kabalalan and the hills of Taviran there stretches an extensive mountainous region or table-land which extends as far south as the Bay of Sarangani. This table-land is designated as the Tiruray table-land or mountains for the reason that its northern half is inhabited by the tribe of pagans of the same name who are not met with anywhere else. The Bay of Sarangani is called in Moro Sugud Bwayan. Sugud means "bay," and Bwayan is the chief settlement at the head of the bay. North of the head of Sarangani Bay and at the southern terminus of one of the ranges of the Apo system of mountains towers the picturesque and conical peak of Mount Matutun. Matutun means "burning," and the mountain is an extinct volcano. Lying between Matutun on the east and the previously mentioned table-land on the west is the country of Talik. North of Talik lie Lake Buluan or Bulwan and farther north Lake Ligwasan, which empties into the Rio Grande through a stream called Maytum ig or black water. This junction occurs at Kukmun, about 8 or 10 miles above Reina Regente. Balabagan is about 10 miles south of Malabang. Magulalung is in the neighborhood of Balabagan. The Iranun sultanate was on the shore of Illana Bay, and the term Iranun signifies, in general, the people who live along the shores of that bay. Iranun is also pronounced and written as Ilanun; hence the corrupted Spanish name given to the bay. The former Iranun sultanate must have occupied the country in the vicinity of Malabang. Tubuk is the territory immediately bordering on Malabang to the north of the Malabang stream. Baras lies a few miles north of Malabang. Ramitan is in the immediate vicinity of Baras. Malalis is near Tukurun. Dinas is the principal settlement on the western coast of Illana Bay. Kumaladan is at the head of Dumanquilas Bay. Sibugay is the name of the large bay east of the Zamboanga peninsula. The word "ranao" means a lake and is the name the Moros give to the upland lake lying midway between Malabang and Iligan and to the region surrounding the lake. The mountain range separating the Ranao table-land from the Rio Grande Valley is called the Kulingtan Range on account of the resemblance its peaks bear to the knobs of the row of kulingtan on which the Moros make their music. The highest peak in this range north of Parang and above Barira is supposed to be Mount Bita. The highest ridge west of Ranao is called Mount Gurayn, at the base of which lies the settlement of Bacolod or Bakulud. The Ranao settlements which are mentioned in the tarsila are Kadingilan, Bayan, Makadar, and Bakayawan in the south, and the Bayabaw settlements of Marawi (Marahui), Madaya, and others in the north; also Sikun, Didagun, and Dupilas.