Stepping out of the passage, they found themselves on a narrow stone walkway. Above them stretched a massive natural cave with water dripping steadily from the ceiling, while the strange, multicolored lights reflected off the cave's rock formations, creating an unexpectedly beautiful sight.

The rushing sound of water came from beneath their feet. When Andrew peered down, he spotted a substantial underground river flowing rapidly below them.

Shining his flashlight downward, he saw steam rising from the water's surface, making it impossible to determine the depth. He could estimate that the river was about 15 feet wide—a fairly large underground waterway.

"There's such a strong sulfur smell! This river water must be from a natural hot spring—I'd love to take a dip!" Chantelle exclaimed, her feminine nature showing as she smiled at the sight of water.

Andrew shook his head and warned, "Underground river water has very complex chemical compositions. There might be toxic substances