Sea of Serenity

Famous mare on Luna's surface, a flat dark plain used as a reference point or landing area. Not actual water but basaltic rock.

The Sea of Serenity, a vast basaltic mare on Luna's surface, stands as an iconic landmark in the Red Rising Saga, evoking the Society's grand lunar architecture rather than earthly waters. Introduced in Iron Gold as a flat, dark plain serving as a vital reference point and landing area, it underscores the harsh, utilitarian beauty of the moon's terrain amid escalating conflicts. Across the series, it remains a static yet symbolically resonant backdrop, highlighting humanity's colonization of celestial bodies without notable evolution or direct plot involvement in later books.