Somewhere north of Manila, amidst a growing urban civilization, there lies an oasis for birds and nature-lovers. The La Mesa watershed is the primary source of drinking water to sustain a population of 20 million people in the capital. And beside it lies the La Mesa EcoPark, which was constructed to raise funds for the rehabilitation and reforestation of the watershed, which almost came into ruin because of illegal settling and logging. The watershed is very vital to the city of Manila because it does not only bring drinking water to the Manila population, it also serves as the lung of the city, with its surrounding forests acting as the carbon dioxide sink and as a source of oxygen to a city replete with the realities of industrialization. Each time someone visits the La Mesa EcoPark beside the watershed, they contribute to the preservation and protection of the reservoir of water -- and ultimately, to the preservation of Metro Manila.