The BTS bus stop is a recreated album-photo spot beside Hyangho Beach, not a working bus stop. It is in Hyangho-ri, Jumunjin-eup, Gangneung; the city information number listed by Korea Tourism is +82-33-640-4535.
Make it one short stop in a Jumunjin visit
Check the route to the photo point and your return before leaving. The line can grow and the coast is exposed to wind, so set a time limit and keep a nearby harbour meal or beach walk as the next stop. The bus-stop installation was made for filming and later reinstalled as a visitor attraction; do not wait there for service.
For a compact plan, visit the photo point, continue to Jumunjin Port or one beach section, then return on the connection you checked. The Korea Tourism BTS Bus Stop listing confirms the location and attraction background. Check wind and coastal warnings before extending the walk.
Allow extra time if travelling on a weekend or holiday. If weather or access makes the shoreline uncomfortable, skip the photo queue and move to an indoor meal or another city stop.