The volcanic eruptions, which took place thousands of years ago resulted in the formation of the Hidden Valley. Due to volcanic eruptions several natural pools came into being. Bathing in these natural pools is believed to have positive medicinal effects. There are also waterfalls, which cascade below. These are found on the far side of the valley. The valley was first discovered by the Chinese traders. They visited the Hidden Valley in Manila five centuries ago. The landscape is witness to the betelnut diggings, which were planted by the Chinese traders on their stay on the valley. Palms, ferns and amlang are some of the trees, which are found in the Hidden Valley of Manila. The trees are 300 years old. The trees and the plants are found in the Virgin forest, which is a part of the Hidden Valley.
The Hidden Valley tour fees include snacks, buffet lunch, park entry fees and the activities, which are undertaken at thew Hidden Valley. The activities are fishing, swimming, hiking, wildlife safari and sightseeing.
