Mount Batolusong, Kay-ibon Falls, Sangab Cave, Mount Aygat is a Registered Property, Municipality of Tanay, Rizal located at Tanay, Rizal, Region IV-A.
Brgy. San Andres which means Bato- Stone and Lusong – Rice Mortar. It is popular for the backpackers nowadays and giving beautiful scenery of sea of clouds in the morning. Mt. batolusong have 2 side trip which is the falls (Kay-ibon Falls) and underground cave & river (Sangab Cave). Because of too much stones in this barangay, Mt. Aygat has been discovered, aygat(a dumagat word) which means "ingat". And the New explored peaks (Payagwan and Rangyas Peak)