Will Crowther, a programmer at the legendary Bolt, Beranek & Newman (developers of ARPANET, the forerunner of the Internet), was a caver, who applied his experience in Mammoth Cave (in Kentucky) to create a game that he could enjoy with his young daughters.  (http://www.rickadams.org/adventure/a_history.html) Crowther was exploring the real Mammoth Cave in 1972, and did create a vector map based on surveys of the real cave,
Uhm. That's when my dad was researching (i.e., exploring and dating) Mammoth Cave too. And cavers know cavers since there's damn few of us, so that means...
OMG. My dad prolly worked with the guy that made Adventure!!!!! At the very least, they'd have known each other. WILD!
dammit, now I'm tempted to go through the zillions of slides of Mammoth from that time period to see.... meh, that requires effort.