The Blackthorn estate is not a singular, opulent castle, but rather a network of fortified outposts anchored by the formidable Blackthorn Hold, strategically positioned along Frosthaven's perilous wilderness border. Blackthorn Hold itself is a structure of dark, hewn stone, its thick walls and reinforced defenses a testament to the house's unwavering vigilance. Watchtowers stand sentinel, their archers ever watchful, while the estate's perimeter is a formidable barrier of sharpened stakes, hidden traps, and natural obstacles, effectively extending its defenses into the untamed wilderness.

Inside Blackthorn Hold, practicality and preparedness reign supreme. The great hall, devoid of lavish displays, serves as a war room, its maps and strategic displays reflecting the house's focus on defense. Chambers are austere, prioritizing function over comfort, while well-stocked armories and bustling training yards attest to the constant state of readiness. A network of hidden tunnels and passages ensures tactical flexibility, reflecting the Blackthorn's emphasis on swift and decisive action.

The Blackthorn estate seamlessly blends with the surrounding environment, its outposts often integrated into natural features like caves and rocky outcrops, providing concealment and defensive advantage. Rangers and scouts move freely between these outposts, maintaining constant surveillance. Kennels house hardy war dogs and trained birds of prey, adding layers of security and reconnaissance. The estate's very essence is that of a working defense, a place of constant vigilance and readiness.

The surrounding lands, under Blackthorn control, are a harsh expanse of frozen forests, rocky outcroppings, and frozen tundra. This is not farmland, but hunting and scouting territory, where survival is paramount. The house controls key locations within this terrain, including hidden storage caves and elevated lookout points. Several small villages, scattered throughout the region, provide the house with vital supplies and fresh recruits, solidifying their connection to the land and its people.