<p>umm, i thought those tunnels were sealed??</p>
<p>[Johns</a> Hopkins Magazine – November 2000](<a href=“http://www.jhu.edu/jhumag/1100web/under.html]Johns”>Johns Hopkins Magazine -- November 2000)</p>
<p>but at the same time i remember friends saying they went through some tunnels and wound up in remsen or something?!</p>