The Rainforest festival site is perhaps the most challenging environment in Forza Horizon 3. It features extremely dense jungle, muddy tracks, deep water crossings, and limited visibility. Cross Country and Dirt Races are predominant here, demanding robust off-road vehicles with high ground clearance and excellent traction.
For the Rainforest, vehicles like the Jeep Trailcat, Ford Bronco, or purpose-built off-road buggies are highly recommended. You'll need to master throttle control and anticipate changes in terrain. The deep water sections can significantly slow you down, so choose your lines carefully. Earning fans here will test your off-road prowess, but successfully upgrading this site is a major step towards the Horizon Finale.