I should search the four spires around the pyramid, and try to find some stone slabs.
"Long ago, the gateways were created by the Dragonkin.
Only the strong would return, with tales of powerful horrors from far off lands within.
From the other side, they brought powerful relics.
Our greatest searched and slayed for the engram to grant us passage.
But for we were not aware, that other sacred gateways would be discovered across the land."
There was also an arrow scratched onto a stone slab, pointing to the north-east.