Hidden Valley Springs Alaminos
- Location
- Alaminos, Laguna, Philippines
- Water type
- sulfurous
- Temperature
- 43 °C
- pH
- 6.5
Water profile
Relaxing — deep, immediate muscle release.
Rich in active gases or metals — a strong mineral character.
Soft water — natural, classic buoyancy.
Hidden Valley Springs is a remarkable natural sanctuary concealed within the volcanic crater of an ancient caldera in Laguna province, accessible by a winding forest path that reveals a series of sulfurous and calcic hot springs of varying temperatures and vivid mineral colors. The thermal pools range from warm to near-boiling, each with distinct mineral compositions formed by ongoing volcanic activity beneath Luzon Island, creating a dramatic palette of greens, blues, and yellows in the crater bowl. Lush rainforest canopy surrounds the springs, where rare ferns, orchids, and tropical birds thrive in the humid volcanic microclimate unique to this hidden caldera environment. Visitors immerse in carefully managed bathing pools while guides share the geological history of this hidden volcanic paradise, making it one of the Philippines' most dramatic and otherworldly spa destinations.