The geothermal springs at Guci are located at the base of Mount Slamet, Central Java's second-highest volcano.
The water temperature at the source is naturally high, requiring cooling systems before entering the recreational pools.
The facility sits at an altitude of approximately 1,200 meters above sea level, contributing to a constant cool ambient temperature.
The water in the Guci springs is colorless and odorless, a rarity among sulfur-rich geothermal springs in Indonesia.
The complex is part of a larger government-designated geothermal tourism corridor.
Hot Water Boom, Guci-Ku is a mountainous water park complex located in the Guci tourism area, centered around naturally occurring geothermal springs. The facility features multiple heated swimming pools, water slides, and recreational zones integrated into the slope of Mount Slamet. The water is sourced directly from volcanic thermal springs, known for high mineral content. The site is designed as a family-oriented destination, incorporating outdoor public baths and private bathing facilities. Elevations at this location provide a distinct cooling climate compared to the surrounding lowlands of Tegal. The park serves as a hub for both therapeutic soaking and water-based recreational activities.
The elevated vantage point overlooking the main slides with Mount Slamet visible in the background.
Bring a waterproof bag for electronics, as humidity and pool mist are significant throughout the park.
Visit on a weekday to avoid extreme congestion from regional domestic tourism groups.
Wear footwear suitable for wet, tiled surfaces to prevent slipping on pool decks.
Avoid purchasing food or souvenirs from non-official stalls immediately outside the entrance, as quality and pricing are inconsistent.
Modest swimwear is expected due to local cultural norms; avoid overly revealing clothing in public pool areas.
