"One evening as the sun went down
And the jungle fire was burning,
Down the track came a hobo hiking
And he said 'Boys, I'm not turning,
I'm headed for a land that's far away
Beside the crystal fountain,
So come with me, we'll go and see
The Big Rock Candy Mountain.'"

-- Harry "Haywire" McClintock, "The Big Rock Candy Mountain" (1928 recording)

Complete lyrics: http://www.lyricsxp.com/lyrics/b/big_rock_candy_mountains_harry_mcclintock.html

"The whole nation had been footloose too long, Heaven had been just over the next range for too many generations. Why remain in one dull plot of earth when Heaven was reachable, was touchable, was just over there? . . . He had a notion where home would turn out to be, for himself as for his father -- over the next range, on the Big Rock Candy Mountain, that place of impossible loveliness that had pulled the whole nation westward, the place where the fat land sweated up wealth and the heavens dropped lemonade."

-- Wallace Stegner, The Big Rock Candy Mountain (1943)

Hey, it occured to me we never explained this in game.

The Big Rock Candy Mountain was TheHammer, the meteor of orichalka that struck the Yucatan (see RadioGuyinMexico) and killed the dinosaurs/saurians/Lemurians. LegalTenderCoxey and the GoldenAgeKnightsOfTheRoad went looking for it but found JohnHenry's hammer instead.