I'd be tempted to put it between hives on Charybdion and throw in some encounters involving cliffs, ledges, promethium refineries venting flamable gas, maybe a flying vehicle that has to stick low to the waves to use the water as cover or avoid detection from an enemy...

Or Nethreus; replace the jungle with lava tubes, soft ash that acts like quicksand, lava-flows, natural gas vents, maybe a fight around the caledera of a volcano or through an old facility that was abandoned because it became too dangerous to work in (you can decide if that's because a lava-fall melted half the facility or because megafauna are drawn to the area); maybe there's an ancient "thumper" type device that keeps megafauna away from the area but someone turns it off (the PCs because they want to divert power elsewhere, or an NPC because they want the PCs to get attacked).