This achievement is mocking a viral video where a guy sees a double rainbow and loses his mind asking, "what does it mean?" (see https://www.youtube.com/watch?t=13&v=OQSNhk5ICTI). Spiritual moment for him I guess, but you will need to jump off a cliff in the Highlands where you can see a tent far below. Best shown in a video of course, credit to the creator - https://www.youtube.com/watch?t=9&v=uIRcnRYIGeY