Petr Hykš:
Columnar jointing (panorama)
Petr Hykš:
Basalt columnar jointing
Petr Hykš:
Olivine found
Petr Hykš:
Basalt columnar jointing
Petr Hykš:
Peridotite xenoliths in neovolcanic basalts
Petr Hykš:
Basalt columnar jointing
Petr Hykš:
Weathered olivine nodule
Petr Hykš:
Upper mantle xenolith (mainly olivine & diopside) in basalt
Petr Hykš:
Upper mantle xenolith (mainly olivine & diopside) in basalt