English version

black-water rafting

From Longman Dictionary of Contemporary Englishblack-water raftingˌblack-water ˈrafting noun [uncountable]  the activity of riding in an inner tube (=large rubber tube filled with air, like those inside a tyre) along a fast-flowing river that runs under the ground through caves
Pictures of the day
Do you know what each of these is called?
Click on the pictures to check.