STONES.WAD is a single-level PWAD designed by Michael Kelsey. It is notable for being perhaps the first "serious" third-party Doom level ever created (the earlier releases were clearly marked as editing prototypes, or had their architecture deliberately simplified for lack of a reliable node builder). The text file provides no canonical name for the map. Although the idgames package is dated April 17, 1994, this level was discussed on alt.games.doom at least as early as March 29, before the final version of DEU 5.0 had been completed. The time stamp on the WAD itself is March 26.