The Devil's pool is a natural pool on the edge of Victoria falls you can swim in during certain months (I saw people doing last September).
Image is in public domain. Source: Wikipedia.
Firstly, I haven't found clear dates on when it is safe to do it (just low water level somewhere from Sept to Jan).
Secondly, What is actually involved in getting to and from the pools?
Thirdly, any figures on reported deaths?
There can't be any exact dates for when it's safe because that depends on the (highly variable) water level in the river, which depends on rainfalls.
Getting there requires taking a boat, a short rocky hike and swimming through a safe part of the river before you get to the pool itself (source: a TV show I saw). You should only do it as a guided tour, in any case. The operators will decide when the water level is safe.
Here's a Zimbabwean newspaper article about the death of a tour guide who was rescuing a tourist. It says "Locals say deaths at the site are rare, occurring at the rate of one death every year". Apparently this includes guides as well as tourists - and some tourists take really foolish risks.
The reason the dates vary is because high water season varies. Guides won't take people when the water levels are too high, because they have to take it too.
There's a really good blog post on this which details:
...I really want to go back to Zambia now.
