Many thanks to SWLing Post contributor, Gregory Ivanov, who writes:

Hi, found this video–I think it’s pretty cool. Shows some impressive 3D propagation simulation, I haven’t seen before:

Wow! That is fascinating. Thank you for sharing this, Gregory. 3D tools like this could be invaluable for predicting propagation even for hams and SWLs.

Of course, all of this is based on the amazing VOACAP application.