earth pyramids near lake serre-poncon, french hautes-alpes

alpes block boulder clay country earth europe european evocative fir firs forest france french geologic gravel green hat hats hautes hautesalpes lake landscape mount mountain mountainous mountains mounts natural nature outdoor outdoors outside overview park phenomenon pillar porphyry pyramid pyramids ridge rock rocks rocky rural sand serreponcon shape slope topped touristic tree trees view wood wooded