aniakchak national monument and preserve is located about southwest of anchorage, alaska, on the alaska peninsula. it is not accessible by road, except from port heiden, a nearby village, and then only to the outer flanks of the caldera. the only ways to reach the monument are by floatplane to lakes, particularly surprise lake, or sheltered coastal waters, or by boat or airplane to coastal towns near preserve lands followed by overland or overwater traverse. notoriously bad weather makes access to aniakchak unpredictable. drop-offs and pick-ups may be significantly delayed. there are no permanent facilities in the monument and the nps does not require visitor registration. visitor services are provided by the interagency king salmon visitor center in king salmon, alaska, shared with lake clark national park, katmai national park and preserve, and other national park service and u.s. fish and wildlife service units and alaska local and state agencies. the monument adjoins the alaska peninsula national wildlife refuge on its northeast and southwest sides. monument lands amount to , and preserve lands .