The zip file contains the full-rez version (3000 x 3000) in PNG format, plus a PSD file with the ground and dungeon walls on separate layers, so you can place objects under the wall shadow and swap out the ground texture for one of your own choice.
~CREDITS~ Cliffs by Jacobo Cortés Ferreira - CGTextures SoilSand by Jacobo Cortés Ferreira - CGTextures SoilCracked by CGTextures - CGTextures Stone Floor Tiles by prcrash - Dundjinni forum