Located in Tandang Katyo of Tanay, Rizal Calinawan Cave is a natural multi-layered cave that was said to have been discovered in 1901. It had served as a shelter of guerilla warriors during the Philippine-American War and the Japanese during World War II.
The passageway through the cave was narrow and the caving system has 7 layers. The first 2 layers is the "Easy Trail", a 150 meter walk while the 3-5 layers, are the "Hard Trail", and will involve a lot of crawling. The 6-7 layers would be difficult to traverse, and takes about 7 days to finish; they are permanently inaccessible, from when the tunnels were bombed by Japanese soldiers. These trails lead to Montalban, Rizal. Its name is derived from the word "linaw", meaning clear, as apt as to what took place in history because it's the place where the Japanese and the Americans settled their disputes.
The entrance fee costs 40 pesos while it will take another 200 pesos for tour guide. It was a challenge to take a hike on these trails, the sight of the stalactites and stalagmites are something to look forward to; Having a tour guide is also helpful as it will give you a deeper insights on the rich history that happened in this cave. They also explained how the stalactites and stalagmites are formed. The natural reserve and the mystery inside a cave as enormous are one of the wonders in the history of our country that has left a trail that we can take a peek to from time to time.