gap out v. to become distracted; to space out. Etymological Note: Likely directly related to to gape ‘to stare at with the mouth open.’ (source: Double-Tongued Dictionary)
Further reading
The edge of the Grand Canyon. A remote mountaintop. A medieval cathedral. Some places are so mystical you feel like you’re close to another dimension of space and time. There’s a term for such locales: thin places. And: did you ever go...