Stone ReadSource Inner Sea Gods pg. 216, Faiths of Purity pg. 25 Faint vibrations in stone can alert you to trouble.
Prerequisites: Knowledge (dungeoneering) 4 ranks.
Benefit: You gain a +3 bonus on Perception checks in underground or mountainous environments. If you have 10 or more ranks in Knowledge (dungeoneering), this bonus increases to +6.
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