The Obelisk gate is a 2016 science fantasy novel by N. K. Jemisin. It was awarded the Hugo Award for Best Novel in 2017. It is the second volume in the Broken Earth series.
Broken Earth series
This is the way the world ends, for the last time.
The season of endings grows darker, as civilization fades into the long cold night.
Essun – once Damaya, once Syenite, now avenger – has found shelter, but not her daughter. Instead there is Alabaster Tenring, destroyer of the world, with a request. But if Essun does what he asks, it would seal the fate of the Stillness forever.
Far away, her daughter Nassun is growing in power – and her choices will break the world.