of Isabela lies to the east; Nueva Vizcaya and Lepanto border the
area on the south, and Lepanto and Abra border it on the west.

The Bontoc culture area lies entirely in the mountains, and, with the
exception of two pueblos, it is all drained northeastward into the
Rio Grande de Cagayan by one river, the Rio Chico de Cagayan; but the
Rio Sibbu, coursing more directly eastward, is a considerable stream.

To-day one main trail enters Bontoc Province. It was originally
built by the Spaniards, and enters Bontoc pueblo from the southwest,
leading up from Cervantes in Lepanto Province. From Cervantes there
are two trails to the coast. One passes southward through Baguio in
Benguet Province and then stretches westward, terminating on the
coast at San Fernando, in Union Province. The other, the one most
commonly traveled to Bontoc, passes to the northwest, terminating on
the coast at Candon, in the Province of Ilokos Sur. The main trail,
entering Bontoc from Cervantes, passes through the pueblo and extends
to the northeast, quite closely following the trend of the Chico
River. In Spanish times it was seldom traveled farther than Bassao,
but several parties of Americans have been over it as far as the
Rio Grande de Cagayan since November, 1902. A second trail, also of
Spanish origin, but now practically unused, enters the area from the
south and connects Bontoc pueblo, its northern terminus, with the
valley of the Magat River far south. It passes through the pueblos
of Bayambang, Quiangan, and Banawi, in the Province of Nueva Vizcaya.

The main trail is to-day passable for a horseman from the coast
terminus to Tinglayan, three days beyond Bontoc pueblo. Practically
all other trails in the area are simply wild footpaths of the
Igorot. Candon, the coast terminus of the main trail, lies in the