The DLNR Division of State Parks, guided by the Hawaii Department of Health (DOH), has closed the Kalalau Trail section of Kauai’s Nāpali Coast State Wilderness Park due to a norovirus outbreak. Since August 14, at least 24 hikers have reported acute gastrointestinal symptoms, including vomiting, diarrhea, and abdominal cramps, with one individual requiring airlift evacuation. The closure, effective immediately, is expected to last until September 19, while comfort stations are being disinfected. DOH teams are collecting environmental samples to assess ongoing contamination risks, and law enforcement will be present to enforce the closure. Affected hikers are advised to monitor symptoms and seek medical care if necessary. This outbreak underscores the high risk of illness in isolated settings without running water.