detail of the mountaintop

apex arch away bedrock calcareous clayey climb climbing crack crevice down erode eroded erosion face fissure flint formation fracture geological geology granite hillside hilltop hole indented karst landslide layer limestone massif mesh mount mountain mountainside mountaintop natural nature net opening outcrop peak pinnacle pothole protection puddingstone ragged retaining rock rockfall rockslide rough safeguard safety sedimentary structure summit wall weatherbeaten weatherworn wide wild wildlife wire worn