Cake room / Spider grinder

[Sire_Salami]

I found an unclaimed spider grinder at -3088, 8, -4984.

Most interestingly there are barrier blocks here -3068, 10, 4895.

Is this a staff build? are staff permitted to use barrier blocks for personal builds?

Discuss

 

[Rune]

Is that in the main survival world? I don't see a grinder or barrier blocks at those coords