The Bramble Marches

 The Bramble Marches is a campaign I've been working on that's meant to include TSR-era exploration and end-game content into 5e D&D. A friend of mine has actually done more with it so far than I have. ;p

The basic premise is that a thousand years ago, a great dark empire crossed the Mistweaver Mountains and destroyed an Arthurian-inspired kingdom, force-marching the survivors to the far south.  Those survivors eventually threw off the yoke of their subjugation and have been slowly expanding their new territory ever-northwards with the goal of reclaiming their ancestral lands.  In the meantime, the old evil empire collapsed, leaving those old ancestral lands a wild wilderness full of ruins and monsters.

The Bramble Marches is the furthest north territory of the survivors of the old kingdom, and its current northern borders are on the southern borders of the old kingdom.  

The map was made in Inkarnate.