Kind of lore heavy but it's a location...hopefully. :/ (Went a little off the deep end on this one)

[hider=Location]The Mists of Rom

Putrid and low, crawling between the roots of eight massive spinney tress, hangs a glimmering fog. Myth has spoken in whispers of a black spider, Rom, with her tenfold skittering offspring. She was birthed unholy in the beginning when there was only darkness. With her children on her back she wandered the seas, as her eight legs were long enough to touch the bottom of all but the deepest seas. Slowly wandering, searching with million orb-ed eyes for a nest for her brood, until here, in a mouth of an eroded volcano, she was able to find solace. Rom folded her enormous legs beneath her, her rump facing the highest peaks, and her fangs dipping lightly into the sea at the coastline. For many years the sun rose to glint in her flickering eyes, beacons in the massiveness of the sea. And perhaps that was her downfall, as it is unknown what events actually transpired next. Perhaps, her demise was dealt by the hands of gods, humans, creatures or something as old as she that festers in the depths of the sea. As Rom died, she died as spiders die, on her back, legs reaching towards the sky. 

All that is known of her struggle is the aftermath; her bones left to rot and spawn mold, her belly to be the birthplace of spiny vegetation thick with leaves of lavish white webs. Her children have reclaimed her, small though they are as they are no god or goddesses. But they pay tribute to their mother, and at dawn, her island glimmers just as her eyes did once, sunlight glinting on webs of intricate designs spread between her legs. And perhaps Rom still protects her children, because at the place where her fangs touch the sea, just along the top of the salt water waves, there spreads an oily substance, thick and viscous. It slowly boils, secreting a mist that rises and falls with tide, sea faring winds pushing it back into the basin where her children roam.[/hider]