[mrb]

For a 3D rendering of the longest sightline, see this direct panorama rendering: https://www.udeuschle.de/panoramas/panqueryfull.aspx?mode=ne...

Note that technically my link is a slightly longer sightline (longer by 7 km).

[lynnharry]

Thanks for the link! It's a very helpful website. It's a pity I can't find any info on the developers for the website.

It even points me to google earth website with the same view: https://earth.google.com/web/@41.059167,77.684167,5853a,0d,3...

Google chrome is probably necessary for openning the site.

[mrb]

Well this is just a personal website, so it is has much (or as little) information as the owner wants to put up. The legal notice page (in German) tells you it's the site of a certain Dr. Ulrich Deuschle: https://www.udeuschle.de/impressum.html