Found myself thoroughly enjoying driving around the edge of Jungle Rock Island and went as far as I could go without having to go back or 'Teleport' to another spot around the rocks.
Thought it would be great if there was a secret cave entrance at the end of the rocks at various places on this Map ( see first screenshot )....the entrance slightly hidden with leafy vines ( not to hidden though...lol) so you could crawl your way back up to a road or something like that.
...much like the below screenshot cave tunnel etc...great fun finding and navigating through them
Maybe even when driving through you could veer off down another cave tunnel and come into a large abandoned High Tech 'Bat Cave' type of scenario, especially under that old Castle in the top screenshot, which would also have a driveable entry up into the Castle from the 'Bat Cave', think it would fit really well.....the Map Artists could let their creative juices flow
Going a step further, when driving into the 'Bat Cave' or maybe calling it the 'Beam Cave' some lights would automatically come on illuminating the area ( much like when entering the Workshop Garages ), but have dimmer old lighting etc..
...but at the back of the Beam Cave there is a slightly brighter light illuminating a button control box....this box looks familiar as it operates the 'Trailer Decks'....but what does it do, if I push a button what happens.
When pushing the 'Up Button', immediately the 'Old Police Car Red Light' starts flashing, audio siren is heard and a large Cave Wall Rock Door starts to slide open, revealing another passage gaining entry to the Castle or Castle grounds above.....just thinking out loud
Below is a Photoshop concept mock up I did to illustrate
sadley it's all over my head....
....just an idea from my part