Mop prepatch classic. On a level 44 character (Péng on Pagle) . I go to the hero’s call board and it has one available quest titled “Hero’s call: Badlands”. The quest text is all about going to eastern plaguelands, not Badlands.
When I take the quest, it’s categorized in the journal as a Badlands quest.
The map shows the turn in ? at Light’s Hope… not Badlands.
I think this is not really a bug per se. Instead, it’s an unfortunate result of the quest-flow designed by Blizzard. Adventurers questing in Eastern Kingdoms complete Western Plaguelands and then venture to EPL. After finishing EPL, an NPC offers transportation to Badlands from Light’s Hope.
If you don’t have any flight paths north of Ironforge, it’s a long ride. In that case, my recommendation is to ask (and tip) someone with the Sandstone Drake for a ride to EPL.