Hellenback

This madman struck up a conversation with me on the night bus:

"I've been to Tunisia."
"Oh wow."
"To Tunisia. Have you been to Hellenback?"
"?"
"Have you been to Hellenback?"
"I don't think so. Is that in Tunisia?"
"Hellenback. Have you been to Hellenback?"
"No..."
"Have you been to Hellenback? It's one helluva trip."
"?"
"I've been to Hellenback. It's one helluva trip. But Dallas was closed."
"I see."
"I've been to Hellenback. It's one helluva trip. I can take you there. Fuck."

The bus arrived at my destination, so unfortunately I had to step off. I think what he was trying to say was, "Have you been to hell and back?"