When in Antarctica Nov 2017 I used walking poles provided by the ship. This Nov I will be taking my own collapsible poles, don't leave home without them. You may be walking on all kinds of terrain but when the snow is deep, they are a god-send. As for walking on ice, do the penguin walk, shuffle along as the senior center tells us older folk, never let your feet leave the ice. (As an aside here, the senior center means well but in reality, after seeing penguins walk, the reality is much different 😉 )