Complex sentence: However, since April 2012 all glacier walks require a helicopter flight past the unstable terminal face,; glacier walks also require some specialised equipment, namely ice axes and crampons that latch onto a sturdy boot.
Split into simpler sentences: However, since April 2012 all glacier walks require a helicopter flight past the unstable terminal face. Glacier walks also require some specialised equipment, namely ice axes and crampons that latch onto a sturdy boot.