Currently, there are several types of tourist trains operated by Korail.
Among them, there is by far the most popular and sold-out train.
It is the Baekdudaegan Gorge Train called V-Train.

The V-Train runs between Gyeongsang-do and Gangwon-do's backcountry.
If you like train travel
It is also a tourist train worth riding at least once.

Every Wednesday to Sunday except Monday and Tuesday
2 round trips a day,
1 round trip between Yeongju and Cheoram, 1 round trip between Buncheon and Cheoram
are running.