I don't use Facebook, have a Facebook account, nor do I use social media in general, but Facebook data, unless private, can be viewed if you know how.
Right click on the link (URL) and, if you have the choice which is dependant on your browser, choose 'Open In New Private Window'. Other browser may have a differ option/wording if they support private windows. That or manually copy the URL and then just open a 'Private Window' and paste the URL in, and hit return.
In the new 'Private Window', accept all cookies, and then just click the circled 'X' instead of logging in. This was using Firefox. This will work for a few images/videos/etc., but after that the process has to be repeated, as your limited Facebook viewing access has ended.
As to the effect, the mine looks to be what is commonly referred to as the Ukrainian Gingerbread (Пряник) anti-personnel blast (effect) mine. This improvised (3D-printed) mine is normally UAV-dropped and contains around 30 g of plastic explosive
The mine's main charge is initiated by the stabbing of a detonator by a simple screw. The detonator is commonly taken from the high explosive incendiary (HEI) projectile of the modern version of the MDZ (МДЗ) 12.7x108 small arms round.
Some imagery below.
