i saw this while biking, someone shoved their empty plastic bottle in this trimmed edge, and the sun went trough it like a magnifier and burned the surrounding leaves, at least that's my theory.

this could even start a fire. i took it out and threw it in the recycling.
@Stellar this makes me a very angy fox

shows up at their doorstep with a torch bottle on my mouth ​
@luna the pro of being on a bike is that i can stop anywhere and fix stuff like this
@Stellar I think the bottle would melt if it was surrounded by a fire like that. I guess someone threw a cigarette or something in that bush. the bottle was placed later there.
@Drayventhal perhaps

@Stellar @Drayventhal nah see the ribbon like loop. thats the suns path.
plastic melts but at a higher temperature than kindling which smokes.

it didnt catch on proper fire just dried to the point of a light smolder which you can do with a hair drier and natural paper

@Stellar @Drayventhal bottom loop is refraction and top loop is reflection