Complex sentence: Sport climbing, on the other hand, requires anchors to be permanently drilled into the rock face; a difference which has caused rifts in the rock climbing community between trad climbers and sport climbers.
Split into simpler sentences: Sport climbing, on the other hand, requires anchors to be permanently drilled into the rock face. A difference which has caused rifts to be formed in the rock climbing community between trad climbers and sport climbers.