I cut a hole in the landscape so that I can fit a cylinder in. Now I want to fill the edges of the landscape's cut hole with the circumference of the cylinder - in a way that the cylinder will still be open.
I have selected the edges like that and then 'fill'
however the result isn't what i expected. It filled the hole on the cylinder... that's fine.. I can I delete those faces.. But it also filled the hole of the landscape in a way that cuts through my cylinder.
How do i achieve what i want? Thank you for looking into my problem :)