> ours is uniquely cool by being bedrock excavation instead of dig & cover. London has both. A number of lines (Victoria, Jubilee etc) were tunneled and hence

> ours is uniquely cool by being bedrock excavation instead of dig & cover. London has both. A number of lines (Victoria, Jubilee etc) were tunneled and hence have the smaller, rounder trains. The cut-and-covers (Circle, District etc) have larger, squarer trains.