The territories occupied by cultivators in the Endless Territories roughly made up around sixty to seventy percent the size of the alternate universe. However, there were many 'danger zones'.
For example, the region marked down as the 'Terror Starsea' was considered the most dangerous location in all the Endless Territories. It had yet to be fully mapped out, but its known area alone already surpassed the entirety of the rest of the Endless Territories. It was incredibly dangerous, and less than one in ten thousand Daolords would survive a trip into it! Generally speaking, only incredibly powerful Daolords would be lucky enough to survive, and even the majority of Eternal Emperors who entered that place would perish.