Blue Lagoons Tourism Laos · 2026-10-12

Blue Lagoon 1 & Tham Phu Kham

Turquoise mineral waters under shady banyan trees and holy cave shrine

Turquoise natural spring water of Blue Lagoon surrounded by towering trees in Vang Vieng
Blue Lagoon 1 & Tham Phu Kham · Vang Vieng, LaosChristophe95 · CC BY-SA 4.0 · Converted to WebP and resized.

Blue Lagoon 1 is Vang Vieng’s legendary freshwater swimming hole, fed by natural underground limestone springs. Above the shimmering turquoise pool stands Tham Phu Kham cave, an impressive subterranean cavern sheltering a revered reclining Bronze Buddha bathed in natural sunlight.

Key Highlights

  • Vivid turquoise spring water constantly refreshed from karst mountains
  • Tree branch jumping platforms and rope swings into deep natural pools
  • Sacred Tham Phu Kham cave featuring reclining Buddha statue
  • Shaded bamboo riverside gazebos for relaxation and picnics

Blue Lagoon 1 & Tham Phu Kham — Blue Lagoons

Cool off in the refreshing waters, leap from low branches into the deep pool, and then hike the short 15-minute trail up to the Tham Phu Kham cavern to pay respects at the Buddha shrine.

Practical Notes

  • Wear a life vest if you are not a confident swimmer; sections of the lagoon are deep
  • Modest attire covering shoulders and knees is mandatory when entering Tham Phu Kham shrine
  • Rent or bring a headlamp for exploring deeper chambers of Tham Phu Kham

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Quiet by nature.