Earlier this year, a Ukrainian collective of daredevils called Mustang-Wanted published a terrifying video of them climbing—and hanging from—various tall buildings and objects. This week, the group posted a new video that's more nerve-racking than the first.

In case you, for whatever insane reason, were thinking of imitating the stunts, here's a message from "Mustang," the group's leader, via the Mustang-Wanted website:

First, I must tell you, that the following videos and photos feature stunts performed by professionals. I really insist that no one attempt to recreate or re-enact any stunt or activity performed on this site. Even if you`re totally sure that you can do that, you are putting yourself in danger. So, please, don't try to recreate my stunts. I mean it!

Also, you better leave the site if you are under 88 years old, because here you can find materials that will lead to the aesthetic dissatisfaction or even injure your psyche.