lol -> "This version of dungeon has been modified from FORTRAN to C. The original was written in DEC FORTRAN, translated from MDL. It was then translated to f77 for UN*X systems, from which it was translated to C. The C translation was done with the help of f2c, the FORTRAN to C translator written by David Gay (AT&T Bell Labs), Stu Feldman (Bellcore), Mark Maimone (Carnegie-Mellon University), and Norm Schryer (AT&T Bell Labs)."This repo is done in C, it looks like a better place to start
https://github.com/devshane/zork