The Fifth Season. I'm currently on the second book The Obelisk Gate so can't attest for the quality of the whole thing but it's geological fantasy and I find it quite fascinating. The scale of the world and conflict keeps getting bigger and bigger. It's very dark but also really draws you in as things ramp up. Themes of the paradox of tolerance, and the challenge of preparing for future crises. The magic system she came up with also feels very fresh to me