Devil's Pool is on the Zambian side of Victoria Falls. It stands almost midway across the mile-wide waterfall, close to Livingstone Island. It is accessible only on guided boat tours operated by experiened boaters. These leave from a launch on the Zambian bank of the Zambezi upstream of the falls.
 But you should ideally be able to swim. Medium to strong swimmers head to the Devil’s Pool from Livingstone Island, swimming upstream for a short distance then back downstream into the pool itself. Weak swimmers can wade from the island to the pool, provided they don’t mind being submerged waist-deep. In both instances, experienced guides are there to instruct and, if necessary, assist. There’s nothing preventing non-swimmers from wading across either, but they are at slightly greater risk.