32 Underrated National Parks Perfect for Avoiding Summer Crowds

29. Haleakalā National Park, Hawaii: Above the Clouds and Beyond the Crowds

While most visitors dash to the summit for sunrise and flee, those who linger discover the real magic of Haleakalā. This Hawaiian treasure spans from Mars-like volcanic craters to lush, bamboo-filled rainforests. Hike the Sliding Sands Trail and you’ll feel like you’re on another planet—often alone. Down in the Kipahulu District, waterfalls tumble into sacred pools with far fewer tourists than nearby attractions. The altitude and remoteness deter casual travelers, giving solitude-seekers room to breathe. Whether you’re catching the stars or the sound of birds in the jungle, Haleakalā offers a serene, spiritual summer escape.