The Superintendent shall establish permit conditions that require a permittee—

(a) When constructing, maintaining or repairing a cabin or other structure authorized under this subpart, to use materials and methods that blend with and are compatible with the immediate and surrounding landscape; and

(b) When terminating an activity that involves a structure authorized under this subpart, to dismantle and remove the structure and all personal property from the park area within a reasonable period of time and in a manner consistent with the protection of the park area.