One of the trails I took on my last visit to Hawaii Volcanoes National Park was the Sulphur Banks Trail, otherwise known as Ha’akulamanu Trail. It’s not far from the visitor center and so is usually popular with visitors because it’s an easy walk, about 1.2 miles roundtrip, and pretty level the whole way. But with few visitors around currently, I had the trail to myself.
This trail is one of several areas in the park where signs of volcanic heat can be seen even when there’s not an active eruption. Steam swirls upwards. The smell of rotten eggs indicates the presence of hydrogen sulfide in the air, one of the volcanic gases leaking from the ground along with sulphur dioxide and carbon dioxide.
The yellow tint of the ground is due to the sulphurous gases and close examination reveals the sulphur crystals that have been deposited there. The crystals photo was taken at one of the displays along the trail. It wouldn’t be wise to thrust one’s camera too close to one of the active vents, such as those in the bottom photo.
For more information about Hawaii Volcanoes National Park, go to nps.gov/havo/.
Posted in response to this week’s Friendly Friday challenge theme of ‘Close Examination.’ See more responses here.