Cucao, main entry point to the park, has four daily Expresos Interlagos buses to and from Castro—even on holidays and weekends. Buses leave Castro at 9 a.m., 2:30 p.m. and 4 p.m., making the return trip at 10:45 a.m., 1:30 p.m., 4:45 p.m. and 6 p.m. The schedule is posted widely throughout the area, which is fortunate, since buses are the only way in or out of Cucao. One-way tickets cost $3; a round-trip fare is $5. Sporadic bus service is also available from Chonchi. Ancud is the departure point for the Chepu sector, with buses leaving daily at 7 a.m. and 4 p.m.

You can also organize transportation, or kayaking, fishing and birdwatching excursions, through Chepu Adventures (Tel: 9-93792481, URL: www.chepuadventures.com).