Blackreach Caverns
Greymoor, released in May 2020, takes The Elder Scrolls Online back to Skyrim a thousand years before the events of the single‑player game, and it splits its time between Western Skyrim’s surface and the underground span of Blackreach. The main story threads through a gothic “Dark Heart of Skyrim” arc centred on Rada al‑Saran and the Gray Host, with Harrowstorms, witch covens and vampires tying the two halves of the map together.
Western Skyrim itself is a broad sweep of snowfields, jagged coasts and familiar locations seen at an earlier point in their history. Solitude stands out as the main hub, its wooden walkways and stonework arranged recognisably but with different details from the later fourth‑era version, while places like Morthal, Dragon Bridge and Karthald offer smaller settlements and quest hubs that pull in local politics and Nordic folklore. As you move through the zone, blood‑red Harrowstorms tear open in the sky, dropping Gray Host enemies and draining life from anyone caught in their radius, reinforcing the sense that the danger here is something seeping in from beneath.
Blackreach sits directly under this landscape and makes up a substantial part of the chapter’s playable area, roughly forty per cent by some counts. Accessible via great lifts and cave entrances marked on the Western Skyrim map, it is divided into several named sub‑regions – Greymoor Cavern, Dusktown, Lightless Hollow and Dark Moon Grotto – stitched together by Dwemer tunnels and broken machinery. The palette shifts here to deep blues and purples, with bioluminescent mushrooms, crystalline growths and a star‑like ceiling giving the caverns an eerie, enclosed sense of sky.
Exploration in Blackreach is as much about height as it is about distance. Ramps, bridges and fallen machinery wind between ledges, and the zone makes frequent use of drops, narrow paths and vertically stacked delves such as The Scraps, where Falmer, chaurus and Dwemer constructs share cramped, multi‑level spaces. Settlements like Dusktown – a mining camp built in a hollow under a suspended chunk of rock – and the imposing Greymoor Keep help orient you inside the maze and serve as bases for quests and dailies.
The enemies you meet below ground echo the chapter’s wider themes. Pockets of Gray Host vampires and werebeasts patrol between Dwemer ruins and natural caverns; trolls, chaurus and their eggs lurk in side tunnels; and remnants of Dwemer automation and traps sit alongside more recent makeshift defences. Above, the Icereach Coven’s work with Rada al‑Saran drives Harrowstorms and other rituals; below, the Gray Host’s attempt to harness the Dark Heart gives Blackreach its central narrative weight.
Greymoor’s broader systems tie surface and caverns together. The Antiquities system sends you back and forth across Tamriel to scry for relics and excavate them, with Western Skyrim and Blackreach hosting their own share of leads, skyshards and hidden digs. Harrowstorms count for achievements and daily quests whether they spawn on the tundra or down in the caverns, encouraging players to treat Blackreach as part of the same zone rather than a separate dungeon layer.
Taken as a whole, Greymoor’s version of Blackreach feels less like a one‑off spectacle and more like a lived‑in underworld: part frontier, part ruin, part battlefield. Moving between the snow and the glow, and tracing how the Gray Host’s plans thread through both, gives this chapter its particular mood – a mix of familiarity and unease that fits the idea of returning to a well‑known province and finding something older and darker stirring beneath it.
