The two formed a standard tactical advance formation, with Lin Yu'an holding a high-power flashlight and a drawn diving knife, walking half a step ahead of Riven, responsible for lighting, exploring, and vigilance.
Soon, they left the small "safe zone" illuminated by the camp lights and headed deeper into the darker center of the cave...
The cave floor was surprisingly flat, covered with a layer of long-compacted bird droppings and calcified dust, which made a "rustling" sound with each step, sounding particularly clear in the silent environment.
"This place... is too big." Riven's voice echoed in the vast space, carrying a hint of awe, "We feel like we're walking inside a giant's skull."
"And why are there bird droppings?"
Lin Yu'an swept the flashlight's beam upwards, and at the end of the beam, they saw a dense mass of black shadows.
"It's bats," he said softly, "there are a huge number of them. Don't shine strong light directly to avoid disturbing them."
