Who's older, Ranulph Fiennes or Reinhold Messner? Which is higher, Bowfell or Tryfan?
This week's quiz consists of 10 short lists for you to put in order.
It's a toughie but we reckon you can handle it.
AND to celebrate its 125th anniversary, this month Victorinox is giving away four special anniversary �Climber� Swiss Army Knives (worth �32.99 each), featuring 14 functions.
The knives all feature the Victorinox 125th anniversary logo, etched onto the primary blade, the Victorinox emblem, in gold, sits on the handle and they are also delivered in a special red 125th anniversary presentation box.
This is the third of four weeks where you can answer the prize question at the end of the quiz for your chance to win.
Click on the window below to start the quiz...
Warning: You must be over the age of 18 to enter the prize question at the end of the quiz