Spooky Cave With Pressure Plates (come Solve Plz)

So I was wandering around, like usual, and I came across a cave. Inside were three stone pressure plates, and since I had no friends (help me) I couldn't figure out if the pressure plates did anything. But uh you can come and do it for me and get all the credit! jk plz dont i want to be famous lol ... Anyways heres a video. Coords are 28, y, -5056

send help im going insane

 

28 -5056 thank me later

 

liking the professional commentary, especially changing your settings mid-video

jokes, good on you for actually including commentary​

 

there i put the coords happy?

 

lets go stand on all the plates!

 

Yeah this cave is found already but still gg.

I found it during the first ???.

When 3 peoples are on the plates it open a way to a new cave, in the past there was nothing in it but I heard that there is a chest now.

Not a very good place since 3 peoples are needed but only 1 will have a chest (if there is one.)

 

yeah, iopened it with some random people I messaged, and then they all left. so i dont have a video with my AMAZING commentary.