runout zone - / ˈrʌnaʊt zəʊn / -
noun
A flatter section of the mountain below an area of possible avalanche activity. Additional safety measures are required in these areas to help mitigate risk, as they would likely be impacted by the runout of an avalanche coming from above.
\\ We are about to cross a runout zone, so we need to be mindful of potential activity from above.
