Bibuson road and island shape adjustment
Approx. agricultural land - rice field & cassava
Approx mapping of swamp in Liberty
Adjust island shape by Bing and local mapping
Rename Hibusong barangays to the new official names
Hibusong island initial mapping
Delete nonexiting tracks which are mainly waterways
Fix elevation of other peaks incorrectly given in feet
Add some estimates of mining sites from Bing satellite map