Some good names might be 'Exclusive Photo Escapades', 'Hidden Image Chronicles', or 'Personal Photo Anthology'. These names give the idea that the photo dump is something private and only for a select few, if anyone, to see. It makes it seem like a collection of personal memories or experiences that are being shared in a more private way.
You might consider 'Private Travel Photo Journal', 'Secret Travel Image Vault', or 'My Travel Photo Hideaway'. 'Private Travel Photo Journal' is like a written journal but in the form of photos, documenting your travels privately. 'Secret Travel Image Vault' sounds like a secure place to keep your travel images privately. 'My Travel Photo Hideaway' gives the feeling that it's a place where your travel photos are hidden away from public view.
One option could be 'Instagram Snap Stories' which is simple and clearly indicates that it's about snaps on Instagram. 'Insta - Photo Journeys' is also a good name as it gives the idea that the photos are part of a journey, whether it's a physical journey or just a day - to - day experience journey. Another great name would be 'IG Photo Highlights' as it can imply that the photo dump contains the best or most interesting photos.