OpenForge 2.0 Corner Spiral Stair Up (ORIG) OpenLock Base

OpenForge 2.0 and OpenLock
Continuing upon a theme.....A roleplaying terrain feature/accessory to depict the bottom of a spiral staircase going up, as in a corner tower, with a cove/storage under the stairs to hide...well something.
Vision was a staircase tower protruding past the corner of 2 walls. As the link needs to be in the corner to properly set this up, the stairs only include a 2x2 base EB (non-standard) to link the standard tiles. (See picture of Up and Down tile in the corner)

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