Ledgerdomain is made up of stone walkways with a few larger land masses and arcs which can act as motion detectors, summoning Stone Creatures, controlled by Adwaita.
Ledgerdomain has an unparalleled sky, meaning any being in the air unbound by gravity is unable to return to the ground easily.
Beings who use magic and mana have their powers and abilities vastly strengthened and increased in Ledgerdomain, with even a single eye blast from Gwen effectively exploding into an expanding wave of mana that destroys whatever it hits upon contact but leaves allies unharmed.
Because the Alpha Rune is no longer in Ledgerdomain, the Door to Anywhere cannot access it the way it used to, leaving Ben and his team unable to access Ledgerdomain. It now requires the aid of technology to figure out the true name before it changes.
It is shown in Couples Retreat that the flow of time in Ledgerdomain is different from that of Earth's dimension.