Editing Project Horizon (section)

=== Location ===
[[File:Horizon - Lunar Area of Interest with Most Promising Outpost Locations.png|thumb|Lunar Area of Interest with Most Promising Outpost Locations]]
Rocket-vehicle energy requirements would have limited the location of the base to an area of 20 deg latitude/longitude on the Moon, from ~20° N, ~20° W to ~20° S, ~20° E. Within this area, the Project selected three particular sites:

* northern part of [[Sinus Aestuum]], near the [[Eratosthenes (crater)|Eratosthenes crater]]
* southern part of [[Sinus Aestuum]] near [[Sinus Medii]]
* southwest coast of [[Mare Imbrium]], just north of the [[Montes Apenninus]] mountains