3 ESSENTIALS TO PACK

■ WATER PURIFIER And make it a good one, as with any jungle trek a lot of water is essential, and you need something to strain out virulent nasties. Find one that filters to 0.01 microns and you’re covered for everything.

■ GOOD SOCKS Trekking through the jungle is punishing on your feet. The Lorpen T3 Heavy Trekker socks are a good option for sustained treks through varied terrain.

■ HELMET Essential for the climb, useful if you find yourself on the back of a motorbike or improvising a river crossing. Our pick would be the

Grivel Salamander.