nit: added a social image for my tunnel post

Author: offbyone

content/posts/2021-09-10-snoqualmie-tunnel.md

@@ -11,6 +11,7 @@ email: offline@offby1.net
 summary: I took my bike up into the mountains for the first time since moving to Seattle, which is honestly a tragedy. It's gorgeous up there!
 status: published
 gallery: "{photo}galleries/snoqualmie-2021{Snoqualmie Tunnel 2021}"
+social_image: "/photos/galleries/snoqualmie-2021/img_8998.jpg"
 ---
 I only learned about the Snoqualmie Tunnel's existence a couple of weeks ago, from [an article on Atlas Obscura](https://www.atlasobscura.com/places/snoqualmie-tunnel). Combining my love of tunnels, proximity to home, and a general desire to get out and ride more often than I have been, I decided that would make a great weekend trip into the mountains. It's actually pretty sad that I had to live here for an entire decade before I got around to it, honestly.