The Enhanced Simplest Minecraft Piston Elevator - SMP Friendly (1.12 or lower)
Snocrash takes on a Mumbo Jumbo design, and elevates it to the next level.
Redstone block elevator allowing walk-in, one-button-push access. SMP Friendly. No placing blocks. Allows for multi floors and has a number of safety features.
Original Mumbo design: • The Simplest Piston Elevator In Minecraft ...
& his channel: / thatmumbojumbo
Enjoy :-)