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Mogpog·Attraction·Historic / Geodetic
🏝️Luzon Datum of 1911
Brgy. Hinanggayon, Mogpog, Marinduque
About this place
A stone marker placed by the U.S. Coast and Geodetic Survey in 1911, serving as the primary geodetic reference point (Station Balanacan) for all Philippine maps and surveys. Proclaimed a national historical landmark and ecotourism site in 2011.
Best Time to Visit
November to May (dry season). Avoid typhoon months (June–October).
What to Bring
Sunscreen & hatWater shoesCash (no ATM nearby)Waterproof bagSnorkeling gear
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Locals Say
This spot is best visited early morning before the heat kicks in. Bring snacks and don't rush — it rewards patience.
— A Marinduque local
How to Get Here
From Boac (capital): Take a jeepney or tricycle heading toward Mogpog. Tell the driver "Luzon Datum of 1911" — most locals know it.
Address: Summit of Mt. Mataas (Mataas na Bundok), Brgy. Hinanggayon (and Brgy. Argao), Mogpog, Marinduque (~220m above sea level)
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