I'm not seriously trying to figure out the purpose of those tunnels. It's baffling me. The more I think about it, and everything in it, the more I'm utterly confused.
You have these evil trap statues who just blast the crap out of you UNLESS YOU'RE SNEAKING which any bad guy in their right mind who is invading a place is going to be likely sneaking in, so what's the point of that... you have some dead guy with a key to a chest containing a druid magic item, so obviously the chest belongs to the druids and the key would likewise belong to them, so why is the key hidden on some random guy in the grass on the other side of a jump on some rocky pedestal?... what was he even doing there?....was he trying to run from the statues or hide from them only to get bombarded by the statues over in that little nook?... why would he try to flee in THAT direction?... Once you land on the first platform they start blowing the crap out of you, so why would he continue DOWN!... why not jump back right away?... then what's with the oil spills... why is a chest containing a druid magic weapon locked away in there when they have a secret vault below the Wolf statue in the heart of the grove that also houses magic items?... so are the secret tunnels a storage area?... are they just set up as a den of traps and evil to kill anyone who might try to sneak in that way?.. I mean, I actually thought this was the case, like maybe the tunnel was just always there and they put a doorway on it, hid it under moss and vines, and set traps to just keep people out. It's like maybe they just don't use it for anything really.
But then, why? You have this main gate that helps protect the grove, so why the back door? Convenience? Escape tunnels? Is it for storage? If anything, it's a MAJOR security issue in the grove. Why not just collapse it?
And what's up with the waterfall entrance/ exit too? Why does no one even concern themselves with that direction or even talk about it? To me, that's probably the easiest way for enemies to get into the grove. It's not much of a climb up to the path. Just go to where Andrick and Brynna were and climb up onto the path from there and wind your way around to the tiefling camp in the grove. MAN! Goblins could come in by the dozens along that way and no one would stop them. So why even bother attacking the main gate? It'd be much harder to defend the grove from that direction. So why aren't there any traps set there? Why set these super awesome deadly magic statue traps in secret tunnels but not in this practically wide open path with no battlements or doors?
And, you know, you COULD get in via the river too, on the east side of the grove. Can goblins not use boats and row around the grove and come up onto the shore?
I'm just saying, the grove's toughest defenses are stuck in some secret tunnel, and they hardly have any true defenses anywhere else. Makes no sense. Doesn't seem like Halsin learned much from his fight with the Dark Justiciars 100 years before the game begins. You'd think after a 100 years, he'd have learned how to better fortify his grove against evil beside simply growing some vines on the gate to kinda sorta cover it, and to put vegetation in front of their secret tunnel door.
Sigh. The more I'm thinking about things, the more problems I find. Larian has a lot of work cut out for them to fix all this. It's a lot of stuff that just isn't making sense the more I think about it.