Abstract type "TravelTips" must resolve to an Object type at runtime for field "Query.travelTipBySlug". Either the "TravelTips" type should provide a "resolveType" function or each possible type should provide an "isTypeOf" function.
Unforgettable experience! The tour starts at Jökulsárlón Glacier Lagoon and the drive to the glacial valley in a super-jeep is an adventure in itself. The 30-minute hike to the entrance of the cave is worth it because the Sapphire Ice Cave is stunningly beautiful with its crystal blue color. It's a natural wonder and a must-see if you're visiting Iceland in the winter time. The tour is their most popular and it's easy to see why - don't miss out on this amazing opportunity!