Occlusion Area - Increase Distance Culling

I have me level completed and Occlusion Areas are set. One particular area, a tunnel is showing the outside world in the distance. I would like to increase the culling distance so that my tunnel remains visible in my line of sight.

I have attached a view of the occlusion area and how the tunnel looks currently with the outside world visible in the distance.


Hey, were you able to solve this issue @GameDesignDude ?