Petr Hykš:
Smoky quartz crystals in calcite vein
Petr Hykš:
Rudice-type geode
Petr Hykš:
Discordance (angular unconformity)
Petr Hykš:
Pekárka locality
Petr Hykš:
Petrified wood
Petr Hykš:
Brachiopod fossils in a baltic chert
Petr Hykš:
Brachiopod fossils in a baltic chert
Petr Hykš:
Echinoidea spine fossil in a baltic chert
Petr Hykš:
Sea urchin spine fossil imprint in chert
Petr Hykš:
Agate found in Elbe terraces
Petr Hykš:
Echinoidea fossil in a baltic chert
Petr Hykš:
Agate found in Elbe or Jizera terrace
Petr Hykš:
Double terminated smoky quartz
Petr Hykš:
Fluorite formation in narrow fissures in orthogneiss
Petr Hykš:
Ripple marks
Petr Hykš:
Osypané břehy
Petr Hykš:
Sandstone spheroidal weathering
Petr Hykš:
Hoodoo, zemní pyramidy
Petr Hykš:
Grains of sand
Petr Hykš:
Morava meanders (panorama)
Petr Hykš:
Sedimentary profile with well developed bedding exposed due to river erosion
Petr Hykš:
Possible (pseudomorphosed?) pyrite crystals with chalcopyrite rims in devonian calciturbidite
Petr Hykš:
Searching for opal
Petr Hykš:
Tiny petrified wood
Petr Hykš:
Rudice-type geode
Petr Hykš:
First moldavite (tektite)
Petr Hykš:
Agate found in Elbe terraces
Petr Hykš:
167 km distant Schneeberg and other Alpine peaks
Petr Hykš:
Schneeberg and other alpine peaks seen from Strážovice (panorama)
Petr Hykš:
Schneeberg and other alpine peaks (165 km)
