Irosin topographic map
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About this map
Name: Irosin topographic map, elevation, terrain.
Location: Irosin, Sorsogon, Bicol Region, 4707, Philippines (12.66384 123.99210 12.74384 124.07210)
Average elevation: 152 m
Minimum elevation: 18 m
Maximum elevation: 706 m
The place had been an undisturbed sanctuary for wildlife until settlers from Bulusan came in search of wild quarry and rattan. These pioneers, using the slash-and-burn method, cleared a settlement beside a river which gave birth to a clearing called Hin-ay, an Albayanon word which denotes the arrangement of the abaca yarn or tupos into a zigzagging pattern ( hinan-ay) in preparation for its actual weaving. Accordingly, the hin-ay or the pattern was the image drawn to connote the waving rivers crisscrossing from the mountains down the valley. In yet another account, the word hin-ay was purported to have been derived from the term an-hay which means gradually ascending. The original settlement which is now called San Agustin is located east of the town proper at a higher elevation, thus the gradual ascent from the lower villages to the then barrio center of San Agustin.
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