What was the trapdoor used for in the Globe Theatre?

Traps at The Globe Theatre Trap doors were built into the stage allowing dramatic entrances during the performances of plays. The height of the stage was five feet – so the area beneath the stage was easily big enough to hold actors. This area underneath the stage was given the title “Hell”.

How do you make a stage trap door?

Quote from video: I plan to do it using this design it's all 2×4 construction with the exception of about a half a sheet of plywood for the doors on the top and then we'll skin it and some salvaged.