I think the Adventure/Exploration pack is totally reasonable!
Think Sims 4 Jungle Adventure, Jumanji, Dora The Explorer - I’d say the "jungle explorer" is a pretty known concept
(Although the Sims pack and Dora clearly are placed in South America, I know)
Build pieces:
Hiking attire (hat, boots, maps)
Boats
Giant Waterfalls
More water FX
More water foliage
Hanging bridges
Broken ropes
Broken wooden planks
Rotting, Moss covered wooden plank set
Overgrown stone pieces (like in Animal Crossing haha)
With the null path too, maybe this has more of a national parks/research facility/animals in their natural habitat kind of vibe?
(Sorry about the font sizes I’m in mobile and it went all wonky haha)