Clues
Reveal clues to the solution for a more challenging tip!
Clue 1: Past Clue
Path down to a mine
From 2014-09-19 >
Clue 2: Past Clue
Mine passage
From 2016-11-18 >
Clue 3: AI Clue
Vertical passage, often in a building
Answer
Reveal the answer letter by letter below.