* Imagine giant piles of rocks that have ice hidden underneath! These "rock glaciers" are found in places like the Colorado Rockies and are super important because they don't melt as fast as regular ice glaciers when it gets hot.
* This is good news because the ice inside them slowly melts and makes water for rivers, even in the summer. This water helps plants and animals that need cool places to live, like special bugs that are in trouble because of the warming weather.
* Scientists are studying these rock glaciers to figure out how much water they can give us in the future. It's like finding a hidden treasure of water that can help us and nature survive as the world gets warmer.