Can’t you just see how it all plays out?!
Some Tillicum campers made sand castles into a fine replica of some ancient American civilizations.
Alma preaches in his home city of Zarahemla (Alma 5:1).

Once he’s done there, he travels to Gideon to preach (Alma 6:8). Just newly retired from the Justice Department, he was so eager to go on his mission that the distance wasn’t an issue. In fact, he didn’t really mention how he got there.