If you've never heard of or done canyoneering (called canyoning in the rest of the world), it's essentially travelling down often-deep canyons in whatever conditions they present.
Sometimes it's a nice hike or scrambling over some rocks,
...sometimes it's wading or swimming in water,
Other times you're using a rope to rappel down long drops and swimming through narrow slots in deep water.
Or all of the above.
A little gear acquisition (wetsuit, dry sacks, water wings for pack floatation) and a long drive turns climbing into canyoning - opposites in many respects.
Very cool - it is incredibly quiet down there, and feels like you're leagues away from the hot desert above. We managed not to get ourselves into any trouble and have a great time, so are looking forward to going back next year...