As with level 3, level 4 requires a condition to be met prior it becoming available to explore/use. Once the requirement is met, then the four walls slide silently into the floor, opening up a massive structure. Like the previous rooms, this entire structure is made of Psuedo-stone, and the floors, walls and ceiling are perfectly smooth.
There are seven main paths within the Vargas Earthmaster site that can be explored. Each leads upwards to a perfectly circular room, that contains a rotating 10 foot sphere. Each sphere is of a specific element, in this case, one of the seven prime of the world. The known elemental stones are:
What other secrets this site contains have yet to be discovered...
Included below is the Vargas Earthmaster Site, level 4 in original black, and for those that prefer an easy-on-the-pocket-print-version, simple white: