Spidorno cannot communicate with his comrades beyond pointing with a leg, but he tries to force his way to the front and scout ahead by a few feat.  He clings to the walls and ceiling, hoping to let his allies past him if a fight breaks out.  At the junction between two paths he stops to listen.

Stealth: 20

Perception: 7

The tunnels are deathly quiet, but for a distant murmuring. It is unclear what passage the sound is coming from.

Thurston calls again upon Thor's favor trying to locate the source of the murmuring. If there are fiends nearby he should be able to sense them.

Thruston senses a growing fiendish aura coming directly from the left through the rock walls.

"To the left" he mutters to the others.

“T-they both go to the left a bit. Uhm... well we should probably search both tunnels anyway. We could go forward now and check this back one after?” He offers

"I agree; we should check both." Bründir peers at both tunnels despite Thurston's enlightened suggestion. "S'pose Dorno could crawl through unseen better'n we can. Maybe he checks th'left an comes back t'let us know?"

Thurston nods in agreement. " We cannot let any trace of fiendish infectaion behind, we should check the other later.. " 

Dorno slowly moves around the bend, upside down on the ceiling and moving from shadow to shadow in hopes of seeing what is down the tunnel before he is seen.

Dorno slinks off down the tunnel to the left, skittering across the roof and walls as he goes. After a short distance he sees more light begin to bleed into the passage from the next chamber. Up ahead he can here several low voices in muted conversation.

Dorno returns to the others and points in the direction where he just found the voices.  He scratches three small marks in the dirt or wall.  He then goes to scout the other tunnel.

The tunnel straight ahead extends a little further, until the caves widen and he enters a larger triangular area with a broad pillar of rock in the middle. He can hear what almost sounds like chanting coming from the left.

Dorno decides to back away from the chanting and carry on down the other passageway out of this triangular area.

Dorno peers into the next chamber. The walls of this cavern are decorated by a rickety wooden frame formed from clean-cut branches lashed together with gut and twine. Banners cut from two-foot-wide strips of old blankets and horsehides hang from floor to ceiling, covering much of the walls. The banners bear dozens of mystical icons and symbols. A large cauldron filled with bubbling red liquid boils in the centre of the room.

He only glimpses this for a moment, then from the edges of the room black, smoke like spirits slink into being, slowly taking the form of crows. They swarm together flying rapidly at Spiderdorno's face and cawing loudly!

Spidorno turns and flees back towards the party, moving as quickly as he can, as the crows give chase.

Val switches back to her axe and shield before rushing towards the sounds of the crows!

Thurston runs towards the sound of crows too. 

Bründir hauls his crossbow under his right arm and his sword in the other as he runs toward the noise with the others.

Vark lets out a startled gasp at the sudden noise, then runs along after the group.

As the group runs into... rather under, the fleeing arachnid form of Dorno, Vark notices the pursuing murder. He raises his hands which become wreathed in swirling clouds before producing a concentrated gust of wind at the crows, attempting to knock them back.