Albert Mathieu-Favier's plans for a coach service through the channel as of 1802 containing huge ventilation chimneys.
Unknown author<span style="display: none;">Unknown author</span>
Der Kanaltunnel - Fakten und Zahlen, 1994, S. 22 uploaded by <a href="//commons.wikimedia.org/wiki/User:Opihuck" title="User:Opihuck">Opihuck</a> (<a href="//commons.wikimedia.org/wiki/User_talk:Opihuck" title="User talk:Opihuck"><span class="signature-talk">talk</span></a>)