* The air: "The air inside the cave was thick and clammy, sticking to our skin like a damp sheet." This implies a feeling of dampness and stickiness that is unpleasant and uncomfortable.
* The rock: "The cave walls were slick and clammy, making it difficult to get a good grip." This describes a wet and slimy surface, perhaps from condensation or dripping water.
* Their own hands: "After hours in the cave, my hands were clammy and shaking, making it hard to hold the flashlight steady." This indicates a feeling of dampness and coldness that may be caused by stress, fear, or exposure to cold temperatures.
The word "clammy" evokes a sense of unwelcomeness and discomfort, which are common experiences for cave explorers, especially in deep, dark, and potentially damp environments.