In 1982, TSR published the module S4: The Lost Caverns of Tsojcanth. It was written by Gary Gygax, and illustrated by Jim Holloway, Erol Otus, Jeff Easley, and Stephen D. Sullivan. It consisted of two 32 page booklets. The first dealt with the wilderness trek to find the caverns, as well as the caverns themselves. The second detailed new monsters and magical items not previously published. In 2004, for the 30th anniversary of the Dungeons & Dragons game, Dungeon magazine ranked this module the 22nd greatest adventure of all time.
This conversion guide allows DMs to run the original module with 5th Edition rules and provides a reference sheet for encounters. It is intended for 5-6 characters of levels 7-10.
To use this conversion guide you will need an original copy of S4: The Lost Caverns of Tsojcanth.