licu langu sandstone cliffs. the big langu cave. sand formations at lode

autumn baltic big boat castle cave caves cesis clay cliffs climb close color detail europe fall form formation formations geology grainy group hole inside koknese landscape langu latvia layered licu lode material moody mountain national natural nature old orange outdoor outdoors overcast park pattern peak perse relax river rocks ruins sand sandstone scenery seaside shape ship stone style success tourism tourist travel tunnel underground viking wall