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T’boli, South Cotabato: Hiking Mt. Melibingoy (Mt. Parker) & Lake Holon (Lake Maughan) -
Lake Holon, the crater lake of Mt. Melibingoy, in South Cotabato was once declared the country's cleanest lake.While researching about Lake Sebu in South Cotabato some years ago, I chanced upon a mountain lake in the same province on Google Maps which I later learned was Lake Holon – formerly…