The answer to yesterday’s quiz is in this reddit comment. Normally I’d just paste it here but there is reddit-specific markup and I am groggy. You don’t have to have an account there. The blacked-out portions are hidden by “spoiler tags”; click on them to reveal them.
I’m groggy because apparently the dry lake a mile off is the spot the local Mensa club prefers for its midnight-to-3am Friday night loud-pipe brodozer truck racing, firework launching, automatic gunfire, and similar activities preferred by gentlemen of leisure.