[orionblamblam]

They look like petrified wood planks ...

Looks like an outcropping of shale to me.

[mysterio]

I don't know. I'd have to see it for myself. But it looks like wood planks to me from these two pics:

[hellbender]

I agree absolutely. It looks like a very ordinary sedimentary outcrop, with natural joints and fractures, like those you could find in many mountain ranges. The bedding is entirely concordant with the topography, which is typical in geology. One would think a stranded boat would be unlikely to perch in perfect conformity like that.

[MineralMan]

Yup, that's shale. Pretty common stuff on mountains, and the angle of the bedding demonstrates the uplifting of the mountain, many millions of years ago.

Silliness.