01 / Yashima
A mountain 5 km long and 2 km wide,recognised as a classic mesa.
About 14 million years ago, volcanic lava hardened into solid rock, while the softer rock around it eroded away over time, leaving a flat-topped plateau standing like a roof. Designated a National Historic Site and Natural Monument in 1934, Yashima (屋島) is a textbook example of a "mesa." Genpei War battle sites spread around its foot.
- About 5 km north-south, 2 km east-west
- 292 m elevation
- National Historic Site & Natural Monument, 1934


