Delaware Redditors share their favorite pieces of state trivia

Last week, Redditors from the First State flocked to r/Delaware to share some of their favorite pieces of Delaware trivia.
Posted by user DeviatedNorm, the thread has garnered 74 comments to date — an unusually high count for the 3,791-member subreddit. Here are five of our favorite facts about Delaware from the thread:

1. The only U.S. state with a rounded border (explained here).
2. The only U.S. state wherein legislators can make amendments to the state constitution without popular vote.
3. The state is home to one single cave (Beaver Valley Rock Shelter Site), which was only discovered in 1958.
4. Rated the third-best state in the country for bike-friendliness.
5. The skull of one of the “most barbarous and amoral women in American history” was kept at Dover Public Library until recently (as of 2013, it’s at the Smithsonian).