Complex sentence: Tryfan is most frequently climbed via its north ridge, which starts close to the A5 road, about 1.5 km east of Idwal Cottage (a youth hostel) or Ogwen Cottage (an outdoor pursuits centre).
Split into simpler sentences: Tryfan is most frequently climbed via its north ridge, which starts close to the A5 road. A common starting point is about 1.5 km east of Idwal Cottage (a youth hostel) or Ogwen Cottage (an outdoor pursuits centre).