Nagbukel Cave is a Philippine cave found in a dome-shaped mountain in the municipality of Diffun in the province of Quirino, Cagayan Valley. There is an excellent view of the surrounding area and Santiago City from the top of the mountain. The cave is a popular site for trekking, spelunking, and picnicking during the holidays. It is also popular with religious pilgrims, who visit the site during Holy Week in the Philippines. The cave is currently being developed by a religious sect called the Lamplighter.
Nagbukel Cave is found in Diffun, Quirino, which is just 4 kilometers away from the municipality of Cabarroguis. The cave may be found along the national highway.
- Department of Tourism. “Quirino.” In WOW Philippines. 
- Department of Tourism. “Things to Do in Quirino.” In Explore Philippines. 
- Nagbukel Cave. In WOW Quirino. 
- “Quirino.” In Hoparound.net