The Hidden Temple Wall (that was called "Mayan Wall" before R30 in April 2016) is a pinkish-brown building-block with a cross-like pattern on all 6 sides.
It can be rotated by holding "r" (as the default key) and dragging the block with the left mouse button. The chosen rotation can be "locked" too by typing "r" (default key), so the whole stack of blocks will then face the same direction when being placed.
The Hidden Temple Wall can be crafted in your Crafting Menu (default key "q") after the according crafting recipe has been added to the crafting menu by buying it in the Store as a part of the "Hidden Temple Super Bundle". Just like all store-bought recipes it will also carry over to all other gameworlds that you'll be playing on.
To craft 8 (blocks of) Hidden Temple Walls, you'll need (as of R44 in June 2017):
- 2 blocks of Stone that can be mined from Mountains, rocky hillsides, recesses at rivers or on the Fossil layer underground accessible through Caves
- 1 block of Wildwood, collected from Wildwood trees found in Jungle biomes, which does not require any Power Cells to be equipped
- 1 Melted Wax made of Beeswax in a Forge or found in Wood Treasure Chests on the surface at night or in Stone Treasure Chests on blocks of the Fossil layer
The "Hidden Temple Super Bundle" also includes 400 crafted blocks of Hidden Temple Walls in a single block kit that can only be claimed once on one Creativerse gameworld.