Towards the top of Long Hill, the inland road from Reading, there’s a well-signposted left-hand turn towards LETHE, a pretty village set amid cool and vividly green hills with a graceful stone bridge straddling the Great River, built by slaves in 1820. Aside from the scenery, the only real reason to come to Lethe is for rafting and ziplining; the one-hour rafting trip takes you past banks dripping with vines. Due to heavy rainfall, the water often takes on a muddy aspect, but it’s still safe for swimming. There are a few turbulent shallow spots where the bamboo rafts scrape the bottom, but the raftmen are highly experienced. The five ziplines are proudly proclaimed as the longest in the Caribbean, and offer an enjoyable tour through the treetops.