Nam Pha Pha Ngam cave is located at Wat Tham Nam Pha Pha Ngam, a fairly large temple complex on Highway 1 between Tak and Lampang. There is no official tour of the cave that I know of, so it will be self-guided.
Driving up and around the statuary, you can find a place to park near the buildings. Then a short walk back up the hill takes you to the stairs leading to the cave.
Before you go, you might want to ask a monk at the Wat if there is power to the cave lighting system. If it’s not on for some reason, you’ll need a flashlight.
A long series of steps goes up the hill to the cave entrance. You’ll find out if you’re in shape or not!
At the top of the steps you’ll come to the cave entrance. There is lighting in the cave that may or may not be on. If the monks have turned on the power to it, there’s a switch in an electrical box on the right.
Once inside, you’ll see some bats nesting up and to the left. Try not to disturb them.
The cave has some twists and turns to it but just follow the lighting. You’ll see some nice formations along the way.
A stalactite cluster.
Besides the formations on the wall, there is a large calcite-covered tree root near a skylight. There are several skylights throughout the cave.
This almost looks like a waterfall but it’s just light from the skylight reflecting off the formations.
Like all temple caves in Thailand, you’ll find plenty of Buddhist statuary and shrines.
In the back of the cave is a large reclining Buddha.
If you happen to be traveling between Tak and Lampang, Nam Pha Pha Ngam Cave is a nice, interesting stop along the way.