We noticed that you're using an unsupported browser. The TripAdvisor website may not display properly.We support the following browsers:
Windows: Internet Explorer, Mozilla Firefox, Google Chrome. Mac: Safari.

“Hairy Hill”

Pu'u Huluhulu trail
Certificate of Excellence
Attraction details
Level 4 Contributor
24 reviews
10 attraction reviews
common_n_attraction_reviews_1bd8 13 helpful votes
“Hairy Hill”
Reviewed April 11, 2013

The name of this old tree-covered crater means Hairy Hill. because there's a Hairy Hill in my home province, I had to see it. This trail is not too long, and has decent views from the summit. It also has "lava trees" where the cast of a burnt away tree trunk is preserved by the lava that flowed against it and burnt it.

Visited February 2013
Thank Binderr_Dundat
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.
Write a Review

71 reviews from our community

Visitor rating
Date | Rating
  • Chinese (Simplified) first
  • Dutch first
  • English first
  • French first
  • German first
  • Japanese first
  • Portuguese first
  • Russian first
  • Spanish first
  • Any
English first
Klickitat, Washington
Level 4 Contributor
40 reviews
25 attraction reviews
common_n_attraction_reviews_1bd8 26 helpful votes
“Puu Huluhulu and beyond.”
Reviewed February 3, 2013

The trip to Pu'u Huluhulu by itself is a 5 star rating, but we went the entire length of the Napau Trail so I dropped it to a 4 star. A group of us went in July 2012 after a Mauna Loa Summit venture and enjoyed this hike more. The trail takes off from a side road/parking area just off the Chain of Craters road (turn off is about 3.5 miles along the CoCR. We dropped a car down the CoCR at the Kealakomo Overlook where the Napau Trail comes out. Get a park map!
The walk out to Pu'u Huluhulu is easy and is appropriate for families. The trail skirts the edge of the lava flow and has several features both geologic and biological to keep you interested. You hike over to a heavily forested Hill (Pu'u) and the trail up is semi-aerobic but the vegetation is different (more varied than the scattered Ohia on the edge of the lava field). The view from the top is fascinating with a heavily vegetated mini-crater inside Pu'u Huluhulu itself. The steep outside walls are also heavily vegetated. A view out to the east is equally awesome. It looks out at Mauna Ulu (3200' elevation) which was the source of all the lava in this huge volcanic field. From the top of Pu'u Huluhulu as you look to Mauna Ulu you can't help but notice a large semi-sunken flat area which was the site of a lava lake much like Kilauea Iki but smaller and on a hillside.
Our group of experienced hikers took the Mauna Ulu trail (not necessarily family friendly after a while) that branched off at the base of Pu'u Huluhulu. It continues out and around Pu'u Huluhulu and crosses the rise between it and Mauna Ulu. Very difficult to see the lava lake so I took a side trip up to the lip of the lake. Easy going as the lava that poured out left very smooth but brittle pahoehoe slides to walk up. The back side of Mauna Ulu was filled with lava trenches, smooth river beds for the lava to flow through. Lots of cool geology stuff to keep a rock junkie happy! As we followed the Ahu (rock cairns) that mark the trail - some easy route finding kept your interest and your eyes up and looking at features. At the top of the eastern ridge of Mauna Ulu we entered an area that was still steaming with rusty red colored vents. This was the main vent system for Mauan Ulu and this area had more Aa (rough jagged lava) that demanded that you watch your footing - indeed you must have good solid well-broken in footware. We continued over extreme volcanic area to the trail junction at Makaopuhi Crater (5 miles from trailhead). This forested edge of an older crater and its sloping rise up kept it from being covered in the most recent flows. The edge of the large Makaopuhi Crater also had steam vents, etc. We walked a forested 2 miles down to the Napau Trail junction. we went east a mile or so to hopefully break out of the trees for a view of Pu'u Oo and the currently active area but turned back as we felt time pressure (not wanting to search for rock cairns in the dark). It was another forested 1.2 miles to the Naulu Trail/ Kalapana Trail junction. This was more of a path than trail but was easy to follow. At the Kalapana trail Junction it was another 2.0 miles out to the Kealakomo Overlook and our rental car. It was interesting that on the final leg of the hike, we were constantly moving in and out of the old road that had been covered periodically with lava. Great as a through put type hike, awesome geological features. Foot weary by the end but perfect to build the appetite for a restaurant stop on the drive back...

Visited July 2012
1 Thank JimScubaDude
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.
Mount Desert, Maine
Level 5 Contributor
52 reviews
12 attraction reviews
common_n_attraction_reviews_1bd8 33 helpful votes
“Loved this trail - don't miss the Eruption Fissure spur trail!”
Reviewed February 2, 2013

Wow, I wasn't disappointed at all! This trail takes you through an old lava field where lots of ferns and other plants are growing up through the cracks. You see both pahoehoe and a'a lava, tree molds, and a kipuka or patch of forest spared by the flow. Lots of ohi'a trees, birds and sunshine, not a lot of shade.

The view from Pu'u Huluhulu is great! You can see right into the old crater, now filled with birds and trees, it's own jungle environment right below you. You hike by Mauna Ulu, still steaming, and can see Pu'u O'o vent, the source of the current lava flows in the distance. Do pick up a trail guide at the trail head - lots of good info.

The highlight for me, however, was the little spur rail off to the right of the main trailhead. There is a sign pointing you to the fissure area. There was an eruption ( forget the date) in which a mile-long fissure opened up, spewing fountains of lava all along it. The resulting openings in the rock and the trees and ferns growing out of them are just spectacular!

We twice saw nene geese feeding on ohele berries, unafraid of our presence.

A great hike!

Visited January 2013
Thank fromaway2
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.
Okemos, Michigan
Level 6 Contributor
233 reviews
80 attraction reviews
common_n_attraction_reviews_1bd8 102 helpful votes
“A bit disappointing”
Reviewed January 20, 2013 via mobile

We did this trail yesterday and were a bit disappointed. The trail is well marked, wandering through the edge of a lava field and then up through a more tropical area to an overlook of a large cinder cone. We may have been spoiled by our earlier hike on the Kilauea Iki trail and hiking out to the lava flow, but still, most of the trail seemed uneventful.

1 Thank kuznitz2
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.
Durham, North Carolina
Level 6 Contributor
242 reviews
74 attraction reviews
common_n_attraction_reviews_1bd8 240 helpful votes
“Great trail, easy to follow and manage, beautiful views!”
Reviewed January 5, 2013

I was sick on the trail, and still enjoyed it - so it must have been good!!

Seriously, the trail is a great diversion in the park, and I think one of the highlights. The payoff at the end is really worth it.

The trail itself starts at a small car park on the Chain of Craters Road. The walk is a 2.5 mile round-trip hike and it is relatively flat, and easy to manage for most people. There are not too many areas where it is hazardous, but the last bit is quite a steep climb, but not dangerous or difficult for most people. You just need to walk at your own pace. Footing is decent, but can be slightly muddy. You don't really need special shoes or anything for this trail.

The trail is well-marked for novices, and it will be obvious once you get there, but look for small plastic reflectors and little rock stacks which help navigate the path.

The final climb up to the viewing area is steep, but has stairs and hand-rails. The view is excellent from up here, but the viewing area is quite small. We had the good fortune of being the only ones up there at the time, but if you run into others, it is a tight squeeze!

You will see a big cinder cone, essentially a formed large hill of lava flow, that looks so stark and menacing - like you would see in a Lord of the Rings movie. Life is starting to make a showing on the trail too, so it is neat to see the plant life among the devastation of the lava flows.

There is a bathroom at the car park, but no other facilities available for purchase of water or snacks.

Visited December 2012
Thank ioj27
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.

Travelers who viewed Pu'u Huluhulu trail also viewed

Hawaii Volcanoes National Park, Island of Hawaii
Hawaii Volcanoes National Park, Island of Hawaii
Hawaii Volcanoes National Park, Island of Hawaii
Hawaii Volcanoes National Park, Island of Hawaii

Been to Pu'u Huluhulu trail? Share your experiences!

Write a Review Add Photos & Videos

Owners: What's your side of the story?

Own or manage this property? Claim your listing for free to respond to reviews, update your profile and much more.

Claim Your Listing