As Solstafir's enunciates the draconic phrase, the mirror clouds over briefly. The fogginess recedes to show an area of the pyramid from the top down from which a flat platform juts out. A hanging garden abundantly covered in vegetation. Water flows into a pool near the center, and from there it disperses outward to the various plants. A bush with multitudinous red flower blossoms, a tall cactus covered in barbed spines, and all manner of other plant life seem to thrive underneath the scorching sun on this hanging garden.

It must've been on a side of the pyramid not visible from the direction you entered.

With his vast knowledge of nature, Thanquil informs you none of those plants are native to Solum.