A portable hole was a magic item worth 20,000 gp consisting of a circle of black cloth about 6 ft (1.8 m) in diameter that, when spread on any surface, opened an extradimensional hole to a non-dimensional space that was 10 ft (3 m) deep. When not in use, the hole could easily be folded to the size of a handkerchief.
- ↑ 1.0 1.1 Mike Mearls, Jeremy Crawford, Christopher Perkins, James Wyatt (2014). Dungeon Master's Guide 5th edition. (Wizards of the Coast), p. 185. ISBN 978-0786965622.
- ↑ 2.0 2.1 Monte Cook, Jonathan Tweet, Skip Williams (July 2003). Dungeon Master's Guide 3.5 edition. (Wizards of the Coast), p. 264. ISBN 0-7869-2889-1.