Question: What type of geological structure is shown in the picture? Please answer in 15 words or less.
Clues:
1. The image shows a rock face composed of many interlocking, polygonal blocks of stone.
2. The blocks are dark gray and brown, suggesting they are volcanic rock.
3. The blocks are tightly fitted together, forming a structure that resembles a natural wall.
4. The rock face forms a steep slope or hill.
5. Sparse vegetation grows at the bottom and top of the rock formation.
Answer: Pillow structure
Category: Astronomy and Geography