Relatedly, the original Colossal Cave Adventure, often known simply as "Adventure", which was a very early videogame and inspired so many others that followed (including the Zork franchise and Kentucky Route Zero) was loosely inspired by the creators' caving expeditions in Kentucky's Mammoth Cave (National Park) and some of the rooms and room descriptions in Colossal Cave Adventure even match up with real Mammoth Cave rooms. (Though my attempts to use the magic word XYZZY to shortcut to find Dragon hoarded gold at the real Mammoth Cave seem to always fail.)

https://en.wikipedia.org/wiki/Colossal_Cave_Adventure