Severis Island was once a hub of trade and production but was now being traversed by tier 7 to 9 Sky Realms looking for Fiend facilities.
After a month, while many traces were found that the location was correct, the actual lair was still not found.
Normally, they would start digging beneath some likely prospects but when dealing with Fiends, that kind of action was suicide. All it would take is a trap to spring and death would be the best outcome.
The fact it was also so widespread led to a question no one could answer either.
Where did all those corpses come from? While cultivators die often, their corpses were usually recovered or at least confirmed dead by beast or other method in some way. The sheer number of corpses found could not simply be explained away but long term planning.
Wild Heart Isle alone had close to 10,000 corpses overall in less than 30 years.
