crossing a desert is like crossing an ocean. They are both from th "Arba Tzrichim Le'Hodos.
So if you do Oceans you should do Deserts.
I was told to make only when going to another continent over the ocean.
-1 what does a Continent have to do w/ anything? you can go to from Aisa to Europe in a minute but from LA to HI not?
Ask again maybe you heard wrong.