Proglacial lake

So imagine you're outside playing with some water and making a big mud puddle. Now imagine that there's this giant ice cube, as big as a mountain, that's slowly melting nearby. As it melts, it creates a lot of water that flows into your mud puddle, making it bigger and bigger until it's really huge!

This is kind of like what happens with a proglacial lake. A proglacial lake is a really big lake that forms next to a glacier as it melts. Glaciers are really big, slow-moving rivers of ice that can carve out entire valleys and mountains as they move along. And as they melt, they create a lot of water that collects in a big lake next to the glacier.

These lakes can be really pretty, with really clear, blue water. But they can also be dangerous, because if the glacier moves or if the lake overflows, it can cause a big flood that can hurt people and animals. So it's important to be careful around proglacial lakes and to always listen to the people who know how to stay safe.