Mark BaumerA 25-year-old graduate student named Mark Baumer walked across the United States for reasons that remain unclear. What we do know is that he started in Georgia on May 10 and ended in Los Angeles on July 29.

For food, Baumer pushed a baby carriage filled with canned tuna, peanut butter and apple sauce, among other things. For sleep, he often just conked out under the stars in a $9 folding chair he bought from Walmart.

The authorities rarely harassed the vagabond, but would sometimes approach him to see if he was all right. When asked if he had met any interesting people or animals along the way, Baumer replied that he once "saw a coyote kill a rabbit."

Keep reading to check out a few of our favorite entries from his Tumblr. (For even more, our friends over at Urlesque have an interview with the offbeat cross-country-traveler.)

July 9, 2010, 9:45 a.m.
I believe this is a headless Spider-Man action figure. Remember that time Willem Dafoe went crazy? I liked that movie. When I was in kindergarten, I had an action figure but someone put it in the sand and it didn't work as well after that.
June 21, 3:00 p.m.
I doubt you'd find a better spot to eat beans in America.
June 11, 9:36 a.m.
I like Texas because they put the population number on the town signs. It lets you know what you're getting into. It also reminds me of an old cartoon where the population changes on the town sign as soon as someone dies. Yesterday I saw a town sign that said 293.
May 10, 3:56 p.m.
Natural Light is by far the most common beer can littered along the side of the road.
June 6, 1:26 p.m.
I met a man on the road today named Andy Sharp. He is cycling across the United States. He started in Boston. When he first came up to me, he asked if I was "Mark," which caught me a little off guard. He then explained that he stopped at the same coffee shop I did in Delhi and they told him about me. The road extends but in some ways it feels smaller. I kind of wish I could race Andy to California, but he says he does sixty miles a day so I guess that's out.