This was my 4th stop: Lushui. There's the Lushui trail, which takes ~1hr to walk, and a geological museum.
I didn't do the trail, but wandered around the Geological Museum instead. The writings are in Chinese, but pictures tell a thousand words. The break-up of Pangaea...
Pacific Ring of Fire. Taiwan is also very geologically active & experiences several earthquakes. There was a strong (6+ mag) eq in Feb last year, in the city of Tainan, which is on the southwest part of the island. On the first day of my trip (April 8), there was a strong eq (mag 6, I think?) off the coast of Batangas in PI; my folks & friends felt it but weren't affected much, thankfully.