winter panorama of the sylva river valley from the top of grekhovskaya mountain

abstract acute angle association cave cavity chemical clear climate cool crystal crystalline deep deposit depth dew diamond discover district drizzle drop earth exploration formation gem geology grain grekhovskaya growth hole jewel jewelry kungursky light massive mine mineral mountain mysticism panorama perm precious quartz rain region river rock science shiny silica snowflake surface sylva top transparent tunnel underground unique valley weather white winter