OK, so information on getting to the crag is here
, though some of it might be dated!
A recent train search shows the following trains from Cheongnyangni station in East Seoul direct to Ganhyeon:
train # departs arrives departure arrival
Direct 1631 Cheongnyangni Ganhyeon 07:10 08:37
Direct 1633 Cheongnyangni Ganhyeon 09:10 10:28
Direct 1635 Cheongnyangni Ganhyeon 12:10 13:34
Direct 1607 Cheongnyangni Ganhyeon 15:00 16:17
Direct 1611 Cheongnyangni Ganhyeon 19:00 20:30
Direct 1627 Cheongnyangni Ganhyeon 20:10 21:35 -
from Wonju, it's a short train ride:
Direct 1628 Wonju Ganhyeon 07:47 07:58 -
Direct 1602 Wonju Ganhyeon 09:29 09:44
Direct 1634 Wonju Ganhyeon 11:43 11:56
Direct 1622 Wonju Ganhyeon 13:22 13:33 -
Direct 1606 Wonju Ganhyeon 15:52 16:05
Direct 1608 Wonju Ganhyeon 17:28 17:39
Direct 1640 Wonju Ganhyeon 18:51 19:01
Bus #52 to 간현 from Wonju runs about every hour. It passes in front of the train station. According to the Wonju site, but #57 also runs there, but I am not sure where it leaves from in the city.
Wonju has linked an English page for the resort here
Drivers: Yeongdong Highway, exit the highway at Munmak IC. - take National road 42 to Wonju (Northeast)- 4.3km ;Turn left -cross Donghwa Bridge and take county road 88. Pass a small hill on and drive 1km more until you arrive at Jijeong Elementary School and Gyeongjanggyo under a steel bridge. Keep going straight for 2.4km, to the entrance of Ganhyeon. There are several exits that are signed (most in English) for the resort. Look for the brown signs!!