Just a guess (since there aren't any other guesses posted) (also, I am not in any way a professional who might know for sure) ... But it looks like either one of those tent caterpillar things - they make those big communal webs in trees and can devestate the foliage - or a gypsy moth caterpillar. Which also ruin trees, but mostly stick to oaks.
That's what it looks like to me, but it all falls apart if you don't have trees nearby that it could have come from...
All things green, outdoors, and nature-y. Whether it's animals in their natural habitat, hiking trails and mountains, or planting a little garden for yourself (and everything in between), you can talk about it here.
See also our Environment community, which is focused on weather, climate, climate change, and stuff like that.
(It's not mandatory, but we also encourage providing a description of your image(s) for accessibility purposes! See here for a more detailed explanation and advice on how best to do this.)
This community's icon was made by Aaron Schneider, under the CC-BY-NC-SA 4.0 license.
