Madlum Inc. Ecoventures 3.76

"Sitio Madlum of Barangay Sibul, San Miguel, Bulacan is located at the northern part of Biak-na-Bato national park. The place was given the name, Madlum, meaning dark, because of its famous caves."

(Source: http*//communityreach*50webs*com/MADLUM
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