Even after Ben left the dark chamber with the archway and the veil and entered a narrow corridor, he couldn't shake the feeling he'd had earlier. Rather than a rather cramped and sterile hallway, the Force in this place felt more akin to a vast and natural cave carved out from centuries of erosion.
The moment Ben stepped over the threshold, the door slammed shut behind him, and the black marble floor began to move, nearly throwing him off his feet. As he regained his bearings, Ben realized that he'd entered a circular room, with a number of doors leading outward, with the one he'd come from being indistinguishable from the rest. Torches burned on brackets in between the doors, burning afterimages into Ben's vision with their blue-white light.
"What the- hey! Stop right there!" A woman in a long blue robe shouted, then pointed what appeared to be a wooden stick at Ben.
To the old Jedi's astonishment, a red bolt shot out from the end of the stick, as though it were a blaster. It was more than charged ionized gas that hissed through the air though. As Ben lurched out of the way of the red bolt, the Force itself vibrated like a tightly wound string that had been plucked.
"Hold on, my friend! You don't want to fight me!" Uncentered as he was though, Ben was unable to put enough Force in his suggestion, and the robed woman sent another jet of red light whizzing towards him. She then moved her hand in a circle, creating a silvery cloud that coalesced into a shape that Ben couldn't quite make out and vanished.
The Force shivered and sang with dangerous intent as the scarlet bolt sailed over Ben's shoulder. Whatever the woman was holding, it clearly was no ordinary weapon. The effect it caused within the Force was not dissimilar to the one that Ben had felt when Dooku summoned Sith Lightning. Which put an idea in Ben's mind.
Snap-hiss!
A third red bolt was met by a beam of concentrated plasma held within a tight electromagnetic matrix. If the projectiles from the woman's weapon created the sensation of oscillating strings, their rebounding off Ben's lightsaber blade was like the toll of a bell, creating dramatic ripples within the Force.
The scarlet light bounced at the perfect angle to reverse its trajectory and soared straight into the woman's chest. She crumpled to the floor without a sound.
It was at this moment that a loud alarm sounded and one of the doors burst open, revealing several men and women, each wearing the same long blue robe as the woman who'd attacked Ben. He sighed as he took up a classic Soresu stance, "I don't suppose I can explain how this is all a misunderstanding?"
