I've been reading Kipps by H. G. Wells, and I came across this sentence, which I am having trouble understanding.
They (the protagonist Kipps and his friend Sid) proceeded to the question of how two accomplished Hurons might most satisfactorily spend the morning. Manifestly their line lay straight along the lane to the sea.
I don't quite get what Wells means by "their line lay straight along the lane to the sea". What does "line" mean in this context? And to whom is the pronoun "their" referring? The Hurons or Kipps and Sid? I am not a native speaker of English so if anyone can help shed some light on this, I'd really appreciate it. Thank you!