Halvor Tweto
Photo Date: 
12/13/2016
The fumes emanating from the Halema‘uma‘u Crater create the noxious vog that circulates around the park and the island.
Halvor Tweto
Photo Date: 
12/13/2016
The Halema‘uma‘u Crater in the Kīlauea Caldera, Hawai‘i Volcanoes National Park.
Halvor Tweto
Photo Date: 
12/13/2016
The Jaggar Museum is a popular spot to visit at night. Be sure to bring a telephoto lens.
Halvor Tweto
Photo Date: 
12/13/2016
The entrance to the Thurston Lava Tube.
Halvor Tweto
Photo Date: 
12/13/2016
The Thurston Lava Tube, Hawai'i Volcanoes National Park.
Halvor Tweto
Photo Date: 
12/14/2014
Sulphur Banks, Hawai'i Volcanoes National Park.
Halvor Tweto
Photo Date: 
12/14/2014
The walk through the Sulphur Banks area is either on a boardwalk or an asphalt path. It is ADA-accessible and great for kids and strollers.
Halvor Tweto
Photo Date: 
12/14/2014
Sulphur dioxide escapes in concentrations high enough to leave crystals behind on the rocks.
Halvor Tweto
Photo Date: 
12/14/2014
Steam vents along the Crater Rim Trail. When surface water drains down to the superheated rock below, it vaporizes and rises as steam.
Halvor Tweto
Photo Date: 
01/17/2017
The Devastation Trail is an excellent trail for younger visitors to Hawai‘i Volcanoes National Park.
Halvor Tweto
Photo Date: 
01/17/2017
Devastation Trail, Hawai‘i Volcanoes National Park.
Halvor Tweto
Photo Date: 
01/17/2017
Hikers enjoying the Kīlauea Iki 400 feet below the overlook.
Halvor Tweto
Photo Date: 
01/17/2017
A quintessentially Hawaiian couple: kupukupu ferns and the ‘ōhi'a lehua flower.
Halvor Tweto
Photo Date: 
01/17/2017
The ōhelo berries are a good food source for the nēnē, an endangered Hawaiian goose.
Halvor Tweto
Photo Date: 
01/17/2017
The Devastation Trail, Hawai‘i Volcanoes National Park.
Halvor Tweto
Photo Date: 
12/14/2016
Bamboo orchid.
Halvor Tweto
Photo Date: 
12/14/2016
Pele's hair is fine strands of lava that drift in the wind like spider's webs. Pele is the Hawaiian goddess of the volcanoes and the creator of the Hawaiian islands.
Halvor Tweto
Photo Date: 
12/14/2016
Keanakāko‘i Crater, Hawai‘i Volcanoes National Park.
Halvor Tweto
Photo Date: 
12/14/2016
An off-road walking area on the Kīlauea side of the Crater Rim Drive allows for a closer look at the landscape.
Halvor Tweto
Photo Date: 
12/13/2016
Fiddlehead ferns are ubiquitous around the park.
Halvor Tweto
Photo Date: 
12/13/2016
The first sign of the Kīlauea Iki eruption in 1959 came from the vent at the base of Pu‘u Pua‘i. As the vent became partially obstructed with debris, pressure increased and eruptions grew to tremendous heights.
Halvor Tweto
Photo Date: 
12/13/2016
A clear line of demarcation exists where the volcanic activity destroyed the forest.
Halvor Tweto
Photo Date: 
12/13/2016
Hikers entering the Kīlaeua Iki Crater.
Halvor Tweto
Photo Date: 
12/13/2016
Collapses in the Kīlauea Iki lava lake's crust account for long fissures like this.
Halvor Tweto
Photo Date: 
12/13/2016
A ‘ōhi'a lehua flower blooms in the Kīlaeua Iki Crater.
Halvor Tweto
Photo Date: 
01/14/2017
The lava flow off of the Chain of Craters Road, Hawai‘i Volcanoes National Park.
Halvor Tweto
Photo Date: 
01/14/2017
A pair of endangered nēnē guard a nest near the end of the Chain of Craters Road in Hawai‘i Volcanoes National Park.
Halvor Tweto
Photo Date: 
12/13/2016
Typical tent sites at Nāmakanipaio Campground.