Tryfan is a mountain in the Ogwen Valley, Snowdonia, Wales. It forms part of the Glyderau group, and is one of the most famous and recognisable peaks in Britain, having a classic pointed shape with rugged crags. At 917.5 metres above sea level, it is the fifteenth-highest mountain in Wales. On the summit are two pillars of rock known as Adam and Eve. Climbers who reach the summit usually jump across from one pillar to the next.