daylight brightly flash into the cavern darkness from the hole at the top of the cave vaults, through ceiling gap

age archeological archeology black cave cavern caverns caves colorful coming dangerous dark darkish day daylight geological geology ground hill himalaya historic ice inside into landscape light lighting lights lonely magical majestic mountain mountains muddy natural nature people place pours rays rough sdiscovery shine staire staires stalagmite station stone stones sunlight sunny tourism tourist travel tunnel underground very wall walls water wet