For your final day in Lai Chau, visit the magnificent Pu Sam Cap Cave. This natural wonder is known for its stunning stalactite formations and underground rivers. Explore the vast chambers and marvel at the beauty of the cave. Afterward, take a boat ride along the Nam Na River, surrounded by lush greenery and towering limestone cliffs. End your trip with a visit to the nearby hot springs, where you can relax and rejuvenate in the mineral-rich waters. Don't forget to try some local herbal remedies for a truly authentic experience.