On a map we see our erm traveler a little south of Pewter city at the entrance of Diglett's cave. Dante asks a passing man
"Pardon me but do you know where we are right now? I'm not from here." The man happily obliges
"Oh we're just south a Pewter right about here" he points on the map "Below down south of us is Viridian Forest right over there behind the checkpoint." Dante thanks him and he responds with "Good luck traveler." As he makes his way to god knows where. What a kind man. Especially to a tourist. 
"Well I've got to go south. The forest it is." Dante makes his descent to the dark forest.