Crevasse

Okay kiddo, so a crevasse is like a really big crack in ice or snow. Imagine you're making a mud pie and you press your finger really hard into the middle of the pie and it makes a big hole. That's what a crevasse is like, but instead of mud, it's in really icy cold snow that never melts.

Now, sometimes people like explorers or scientists go walking or climbing on this icy snow and they might not see the crevasse. That's because it can be covered up by more snow and look like the rest of the ground. So if they accidentally step on it, they could fall into the crevasse and get hurt. That's why it's important to be really careful and have special tools and equipment when you're exploring icy places.

Overall, a crevasse is a big crack in ice or snow that people need to watch out for when they're walking or climbing around on it.