High/epic fantasy works are set in a secondary world and have a complex and sweeping plot. Narrative usually involves detailed world building, warfare, the rise and fall of kingdoms, as well as a much larger cast of characters than traditional fantasy books. Setting is often redolent of medieval Europe.
Well-known writers include J.R.R. Tolkien, George R.R. Martin, and Robert Jordan.
Because of George R.R. Martin's series A Song of Fire and Ice, the genre has gained in popularity in the last few years, with a tendency toward the dark and gritty. A celebrated recent title in that vein is Prince of Thorns by Mark Lawrence.
If you write high/epic fantasy, explore this genre to connect with other like-minded writers, workshop, and publish your book.