The mystery. In long SCP stories, there are often a lot of unknown elements. For example, in the story of SCP - 173, we don't really know where it came from or what its ultimate purpose is. This sense of mystery keeps readers intrigued.
One long SCP story is SCP - 173. It's about a strange and dangerous statue-like entity. It can move extremely quickly when not being directly observed, and it has a very eerie and disturbing nature. The story gradually reveals more about its containment procedures and the strange incidents associated with it.
I'm not entirely sure which specific 'long horse story' you mean. There could be many fictional or personal stories with that title. Maybe it's about a horse that has an unusually long body or a long journey of a horse.
The significance might depend on the nature of the story. If it's a cultural story, it could represent certain values like perseverance if the long horse overcame difficulties.
I don't know who told the 'huey long horse story'. It could have been someone from Huey Long's family, a local historian, or just an old - time storyteller in the area where Huey Long was known.
I'm not really sure specifically what the 'huey long horse story' is about as it's not a very common well - known story. It could be a very specific local or personal story that I'm not familiar with.