Nar's takes time to examine the 'ur-church', and he quickly realizes that the altar is very recent construction. Even the statue was likely carved within the last few months. The temple itself is much older, dating back generations, though to what it was originally dedicated, Nar finds no sign. The blade itself is corroded and pitted with rust.
Qralloq sent a note to Cmbrian
The others see Nar reach for the blade, a cruel rictus twisting his face, before a flash of golden light crosses his eyes, and his face turns instead to rage and disgust.
When Grok sticks his head in the crevice, he sees that it winds tightly for one (or more) turns, and it is this winding coupled with the texture of the rough, uneven rock, that makes it hard to see, even with its width. His nostrils pick up a sharp, musky scent. He knows that some predator lives within, or at least makes its lair here.