How does one get from Uyuni to Isla Incahuasi (in the middle of Salar de Uyuni) by public transportation? I know it's doable to reach the salt lake, wikitravel states:
there is also the option to just catch the local bus to Colchani (leaves from the street with all the bus company offices) for BOB10. Ask the driver/ayudante to let you off at the salt flats, and you can hike around for free to get a sense of the place. It takes about two hours to reach an old salt hotel.
I'm not sure if it's also possible to reach the Isla Incahuasi?