This is the second part of a three-part description of a hike along the Puna Coast Trail in Hawaii Volcanoes National Park (See part 1 here).

As the trail reaches the coast, it passes over an older flow that has a fair amount of vegetation on it. The third photo shows the trail cutting through a swathe of naupaka, sourbush, and assorted grasses.

This area was, despite the threat of volcanic activity, well occupied by early Hawaiian people. Along the trail are several reminders of that including the structures below. The photo, below middle, shows the amazing abilities of plants to grow in even the most daunting locations. The roots are somewhere deep in the lava, from which the trunk of this noni snakes upward. The large, nobbly fruit can be seen on this plant. This fruit, when ripe, has a pungent aroma which supposedly smells like vomit!

The bottom photo shows an area of rocks and black sand on the coast, backed by an extensive field of naupaka. Beyond that, the trail passes close to a pair of sea arches seen in the top photo and the one at top right. This is a rugged coastline and, when the weather is rough, huge waves can crash up and over the lava. It’s also an unstable coast with rocks and sections of cliff liable to tumble into the ocean.

In the background of the top and bottom photos are the palm trees of ʻĀpua Point, which will be the focus of the third and final post about this trail, tomorrow.

For more information about Hawaii Volcanoes National Park, go to nps.gov/havo/. For more information about the Puna Coast Trail, go to bigislandhikes.com/puna-coast-trail.

Last month, I posted photos of colorful lava (here) that I saw on a hike I’d just done. In that post, I noted that ‘I’ll do a post about the trail once I’ve gone through the way-too-many photos I took that day!’ With all that’s been going on in the interim, processing those photos took a long time, but now I’m done. So here’s the first of three posts about the trail, not that you can follow in my footsteps right now because Hawaii Volcanoes National Park is currently closed.

As the name indicates, the Puna Coast Trail travels along the coast of the park, but it starts about a mile inland, across Chain of Craters Road from the Pu’u Loa Petroglyphs trailhead. The trail is 11.3 miles long and ends at Halapē campground, but I only hiked as far as ʻĀpua Point, 6.6 miles along the trail. This rugged trail can be hot, windy, and wet so sturdy shoes or boots, a hat, sunscreen, and raingear are a must. There’s no fresh water on the trail so take plenty, as well as enough to eat.

The trail starts by crossing the 1972 flow from an eruption at Mana Ulu. In the top photo, lava from this flow surrounds a small area of older lava. The ferns growing in the cracks are Polypodium pellucidum, an endemic fern known in Hawaii as ae (pronounced Ah Ay). These ferns are among the first plants to grow in new lava fields. The faint outline of the trail can be seen extending from the middle left of the photo to the cairn on the horizon.

Second photo: An upwelling in an old lava flow has cracked open to reveal a variety of colors within. In the background is Hōlei Pali. A pali is a steep slope or cliff. When a flow goes over a pali, it can often be seen, safely, from a distance away.

Third photo: A trail-marking cairn on a section of older lava that has been somewhat revegetated. The noni (Morinda citrifolia) shrub beside the cairn is another early colonizer of lava flows being tolerant of the harsh conditions found there. Noni is a ‘canoe plant,’ having been introduced to Hawaii by the first Polynesians who arrived in their ocean going canoes.

Fourth photo: Cairns mark the trail across the expanse of lava from the 1971 flow, where very little vegetation can be found. This first part of the trail angles down toward the ocean, which can be seen in the distance.

Below: Colorful smooth pahoehoe lava lies on top of ropey pahoehoe lava, from the same 1971 flow. The kind of lava can change quite quickly as conditions change in the flow itself and the terrain it travels through. This also shows the colors in different layers of lava as well as an ae fern getting a toehold.

Bottom: A little hill of pahoehoe lava showing its different forms all jumbled up. I almost included this photo in the earlier post since its colors, textures, and swirls were unexpected art for me.

Tomorrow, part two follows the hike along the coast itself.

For more information about Hawaii Volcanoes National Park, go to nps.gov/havo/. For more information about the Puna Coast Trail, go to bigislandhikes.com/puna-coast-trail.