Strange outcrop ?

[Mine Shaft]

Hi just wonder could there be any "Gems/Crystal's" in this type of outcrop ? i have only been here once and did not dig around only took photos. Its located off of hwy 395 in the sierra mountains. Thanks for any info.

 

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[Eu_citzen]

Columnar basalt. I believe it's rare for them to contain anything of interest, but you really have to look to find out.