The number of locations already discovered can be located under the Stats tab in the Pip-Boy.
The challenge that unlocks the achievement requires visiting 75 locations to be completed, which can mislead players, but this challenge only appears after completion of Walker of the Mojave, which requires discovering 50 locations.
Occasionally when the achievement does not appear at the 125th location it can still be obtained by finding more locations.
This page was last edited on 25 August 2017, at 22:33.
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