Placing alien light communication devices on mountain tops will help you finish a Legendary Quest in Fortnite Chapter 2 Season 7.
Making an appearance during Week 3, and following on from placing Boomboxes within Believer Beach, this quest has you place four alien light communication devices across four locations on the southern corner of the map.
They are fairly close to each other, so depending on where the storm closes in, you might be able to finish the quest in no more than two matches. We recommend using the pickaxe to break whatever you can find on the vicinity and build stairs to make the climbing easier.
