The interior and coastal areas offer countless outdoor adventure possibilities, from river rafting, trekking and bird-watching to wildlife-viewing and fishing. Community tourism is growing, particularly in the Rupununi. Most folk arrange adventures through Georgetown's tour agencies, but independent travel is possible – though it really pays to plan ahead, as many lodges and ranches are simply not prepared for last-minute guests.
What you can't expect almost anywhere in Guyana, however, is marked hiking trails – you're effectively going to be in the wilderness anywhere you'll want to walk. With this in mind it's always best (and often essential) to go hiking with a local guide, rather than to strike out alone. One walk that is particularly notable is the expedition-level hike to Kaieteur Falls, which usually begins at the gold-mining town of Mahdia and takes three full days. It's a challenging but highly scenic trek through the rainforest, including several stretches by boat on the river, and can even involve swimming in parts.
One of the few marked hiking trails in the country is the Panorama Nature Trail on the edge of the village of Annai in the North Rupununi. This is a short but fairly challenging half-day hike, with some excellent bird-watching to be had on the way.