But a mountain peak would be far away, while the top of the wall is right at the city. When the sun is less than 30 degrees above the horizon, the shadow of a 9 mile wall would be over 15 miles long. You would have a shorter day if you lived near the wall. Real estate values would suffer.<div>
<br><br><div class="gmail_quote">On Mon, Jun 14, 2010 at 2:13 PM, James Wynn <span dir="ltr"><<a href="mailto:crushtv@gmail.com">crushtv@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<div class="im">On 6/14/2010 1:12 PM, Jack Smith wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
A 9-mile-high wall would cast a long shadow across the city while the sun was rising or setting.<br>
</blockquote>
<br></div>
True, but any mountain range would technically do the same thing.<div><div></div><div class="h5"><br>
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