a large natural hole underground
cave
a small electric light you carry in your hand
flashlight
a bag carried on your back
backpack
a thick, strong cord used for climbing or pulling
rope
a mark left by a foot or shoe
footprint
a small road through a forest or field
path
a tool that shows directions
compass
a place where you can go inside
entrance
a long passage underground
tunnel
something that catches or surprises people
trap
left empty for a long time
abandoned
difficult to find
hidden
