The National Park Service and Maui Fire Department received notification early Monday morning that a visitor had activated an emergency beacon requesting emergency assistance in Haleakalā Crater.
A search and rescue operation, coordinated by NPS and MFD, resulted in the location of the reporting party.
A NPS Law Enforcement Ranger made contact with a man in his 30s, near Hōlua Cabin.
The patient was unable to walk, exhibited signs of altitude sickness and severe dehydration. He medically evacuated by MFD Rescue 1 Helicopter.
Additional details were not immediately available.