I appreciate the info, thanks!

Very impressive, a truly beautiful rendition.

Can I ask - Is it expensive to buy the Sentinel-2 imagery?

That's an interesting idea.

I'd be very interested to know when the earliest stringed musical instruments appeared.

(And before that the earliest use of "string" or "rope" in some form).

> Using wood's elastic proprieties is not obvious at all

There is a kind of snare (spring snare) which bends a still-alive sapling with a rope joining to a noose and trigger on the ground which can catch mammals images

This is simpler than a bow and could have been on the inventive pathway towards a bow and arrow.

Thanks for the tip.

I get the idea of Key Frames but the underlying logic is opaque.

Agreed, I cannot work out how to:- delete frames, copy/move frames to another part of the sequence, edit a sequence of frames, copy an object from one frame to other frames.

We used to dream of having a tree in our field.