Pretty Lazy-ish if you ask me. usually when players find out theres a great wall in ascalon, they just want to do missions and zoom through the game. They should start exploring and get QUESTS also. AND SKILLS!
At Yak's bend I didn't see any Enter Mission button, so I grabbed henchmen and started walking west. That's another way to end up at Lion's Arch. You can pitstop at Icetooth Cave, grab better henchies and farm gear the whole way. Then you can come back at a higher level with better gear and do the missions to get to Kryta and get even more xp. But yeah... if you're stuck, start walking.