Rainoga

The Tun River is a broad, temperamental waterway coursing through the western reaches of Cormyr and the Dragon Coast, originating in the shadowed Farsea Marshes and winding south through the wild Tunlands before spilling into the Dragonmere amid the windswept Gritstone Moorlands. Fueled by stormwaters cascading from the Storm Horns, the Tun is infamous for its unpredictable surges and seasonal floods that render surrounding lands inhospitable to settlement or agriculture. Over centuries, these deluges have helped birth the Farsea Swamp—a vast, fetid expanse that absorbed both the original Farsea and Tun Marshes following the Spellplague’s upheavals. Though treacherous, the Tun remains vital to regional ecosystems and a source of rare reagents, particularly the prized maxor plant whose essence, maxoris, is sought by alchemists and poisoners alike. Dangerous creatures prowl its dark waters, and legends claim ancient powers slumber in its silt-choked depths.

A churning ribbon of slate-gray water winding through mossy hills and bog-choked valleys, with low, collapsing banks lined by tangled reeds, willows, and skeletal drowned trees. Steam often rises from the warm marshland, casting ghostly veils, while storms from the Storm Horns cause violent floods that reshape the river and its surroundings, filling the air with the hum of insects and the scent of wet rot and iron-rich soil.