Powerhouse Plunge Access is a trail access point situated along Ring Creek in the Lava Flow trail network near Squamish, British Columbia, roughly 50 minutes from downtown Vancouver.

It serves as a key connector in the area's mountain bike network, linking trails such as Ring Creek Rip and the Powerhouse Plunge descent to a forestry access road that runs between Crumpet Woods and Quest University.

Riders typically use this access point to reach Powerhouse Plunge, a classic black-rated trail known for its boulders, ladders, and technical switchbacks.

The access trail itself is described as a smooth cross-country route, making it a manageable approach before the more demanding terrain ahead. An enduro bike is recommended for the full descent, though the trail is rideable on a cross-country setup.