Starting from the month of Salamanca River, upstream following the course of this river to its intersection with Tinobaga Creek; thence following the course of this creek to B.B.M. No. 6; thence running in a straight line to B.B.M. No. 5; thence following the course of the Aglolomot Creek until it intersects latitude 10° 45′; thence in a straight east-to-west line which coincides with latitude 10° 45′ to its intersection with the present Escalante-Sagay boundary line; thence southwestward following the said Escalante-Sagay boundary line to the point where it intersects the present Escalante-Calatrava boundary line; thence southeastward following the Escalante-Calatrava boundary line, then the Escalante-San Carlos boundary line as shown in the boundary and index map of Escalante cadastre, B.L. case No. 2, surveyed July, 1917, to October, 1918, by survey party No. 19 of the Bureau of Lands, passing through M.B.M. No. 2, to M.B.M. No. 1, on the shore of Tañon Strait.
