Where can I find topographic maps of South Korea? If those don't exist, where can I find good hiking maps? Specifically, I'm looking for maps suitable to hike the Jeju Olle Trail.
For topographic maps, I've found the Genshtab maps — not ideal in a densely populated area with lots of infrastructure that has likely changed. According to omnimap, official maps do not exist, although geospatial.com offering maps for 149$ per sheet. To cover the trail takes six maps, and I don't want to pay 6*149=895$. The official English language Jeju Olle Trail website links to an English language guidebook, but this only includes sketches not suitable for navigating in nature. Although I get the impression the trail is well-marked, I prefer to have a detailed map in addition. It is fine if the map is in Hangul, although an English translation of the legend would be quite helpful. For Mt. Hallasan, I found this detailed, non-topographic sketch (Warning: 8583x6159 square pixels!), but for the coastal Jeju trail, I've found nothing. Does the map I'm looking for exist, or do hikers do with waymarks along with non-topographic sketches?