Moving to the end of the hall where Pyros is investigating she finds another outline. See how this corner doesn't fit well and the small scratches? I think if we can get something like a dagger in there to pull against the East wall right at the corner, it will open...
[Let's Call the secret doors W and SE]
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Jerry's 'Observation' NWP really helps with those secret door rolls

She found 2 secret doors and their triggers!
they are where the blue trail meets the middle of the West wall and where it dead-ends to the south.
I'll update them in the map for the next post