What kind of portal is this (Minecraft)?

I tried to activate it earlier by adding obsidian.

Thanks in advance!

https://minecraft.gamepedia.com/...ned_Portal

You still have to replace the weeping obsidian with normal ones, then you can activate the portal and travel into the nether

From the 1.16 update there were added you can't light it because of the crying obsidian so the obsidian with the purple if you replace it with normal obsidian it should work

Broken nether portal. Can be made into a normal nether portal like other nether portals.

Thanks. I thought that this was some kind of special part