article_snippet.sent: A tunnel was built through the mountains in 2004, but before that, a walk to the next village would have meant a strenuous hike or horseback ride over the 400m high mountain.
article_snippet.sent: Before 1988, Undredal was only accessible by boat, but now a road connection has been made by constructing two tunnels as part of the European route E16.
article_snippet.sent: It is so remote that mail is delivered by mule .