Temple of Kopec - impossible layout

While playing through the campaign, I encountered a layout for the temple of kopec where I couldn't access the far left corner where the next zone should be. I uncovered the entire map just in case, but this one area is the only place I can not go. There are walls in the way with no way to circumvent them.

Heres an image I took of the wall and the bottom of the map.
https://imgur.com/Oj1KJPX