I had an "Aha" moment when I saw this article. We were up in the building again where I posted the night reflection photos the other day. I was looking at the Light Rail construction across the way, and I was thinking "where is it going?" From our vantage point, it sort of just disappeared in the trees on the left side. Aha! They're digging a short tunnel under part of Bellevue, going out to Redmond and Microsoft.