Vardousia
Vardousia is a high mountain pass at an elevation of 2.026m (6,646ft) above the sea level, located in northwestern Phocis and southwestern Phthiotis, Greece. It’s one of the highest roads of the country.
The road to the summit is gravel, rocky, tippy and bumpy at times. Great trail for experienced wheelers. Avoid driving in this area if unpaved mountain roads aren't your strong point. 4x4 required. Stay away if you're scared of heights. Expect a trail pretty steep. Wet conditions may make for tough driving along the muddy road.