This post discloses an 8-day itinerary for exploring the Big Island, Hawaii. It is based on the expedition performed by 
Warning: these adventures are not for the weak. Instead, these feats should only be attempted by a strong and frugal traveler, who is prepared to leave no trace. We reject commercial tourism and those that desecrate the Hawaiin wilderness using motorized contraptions. Hike or bike, but avoid disturbing what remains of nature by financing trucks, helicopters, and motorboats.
Map
We planned our trip by creating a custom map of attractions:
We decided to circumnavigate the island clockwise, beginning at Kona airport, where we rented the weakest car available from Hertz, a Nissan Versa.
Day 1: Kealakekua Bay
We hiked to Kealakekua Bay, with the Big Island's best snorkeling and Captain Cook's Monument. Here's our GPS track. The hike is about 2 miles each way and scenic:
Francesca joined us for this part of the journey. She's an Italian scientist currently living in Arizona, who performs some of the most advanced matrix computations for data integration in the world.
At the bay, we found a nice hammock spot:
The main attraction however is the snorkeling. Put on some goggles, jump in, and witness your world transform into a colorful cacophony of marine mania. We didn't get any pictures of the underwater view, but on shore the sun gave birth to crustacean reds:
We drove north this night and camped at Mãhukona Beach Park, which was somewhat sketch especially considering its $42 price tag for 2 non-residents.
Day 2: Pololū Valley and Muliwai Trail
We started day 2 with a short hike down to the beach at Pololū Valley. The view looking out towards the 7 valleys of the Kohala Volcana was impressive and a nice reminder of the wilderness we were about to explore.
Next we drove around Kohala Volcana to reach Waipi’o Valley (the easternmost valley). From there we set out to hike the Muliwai Trail to Waimanu Valley (tracks).
Check out
And wet...
And by the time we reached camp, dark. We stayed at campsite 1 (map download), which was pretty good, although campsite 2 has the best view and fire pit, and served as the socialization venue for all the expeditions.
Day 3: Waimanu Valley
The view in the morning was worth it:
We continued along the valley perimeter along an unmaintained trail network to reach Waihilau Falls, the 14th tallest waterfall in the world.
Remember this is the jungle and the trek is treacherous:
That night we had a gathering of the vibes with other attendees.
Day 4: Vacating the Valleys
We hiked out early. By the way, did I mention there are two major water crossings: Waimanu Stream and Queen's River. The beauty however is that you get to experience where the fresh meets the salt waters. Watch
The hike out went smoothly. Overall, this outing comprised 22 miles of hiking and 10,600 feet of elevation gain.
That night we stayed at a cottage in Hilo, which despite costing over $100 was worse than every other spot we stayed. However, we were able to do laundry and rest up for our big ascent coming up.
Day 5: Mauna Kea
We drove to the visitors station at Mauna Kea at an elevation of 9,200 feet. The Nissan Versa struggled to perform internal combustion at the lowered oxygen levels. From there, we began the hike to the summit of Mauna Kea, the highest peak in Hawaii at 13,803 feet and the tallest mountain in the world if plucked from the root.
Despite augmentation with 10 milligrams of acetazolamide, I felt elevation weakness, even at the visitation centre. Step by step, we ascended this dormant volcano and sacred landmark via the Humu'ula Trail. We passed two other hikers on the way, who were unprepared in almost every way possible — inadequate sun protection, inadequate thermal layering, inadequate water supply, inadequate altitude acclimation. To the best of our knowledge, this couple never made it to the top.
On the way, we stopped by Lake Waiau, Hawaii's only alpine lake and a place of great historical importance as ancient peoples would deposit umbilical cords of newborns here as a ritual to promote longevity.
A few other visitors stopped by and took a photo for us:
However, one of the visitors kept throwing rocks in the lake, which annoyed me because the lake already struggles enough with maintaining its depth.
After a total of 6.5 miles, we reached the summit and enjoyed the views:
Mauna Kea is also special for being one of the premier sites on the earth for astronomical observation. The area surrounding the summit is currently home to 13 telescopic observatories:
A telescope much greater than any of the existing telescopes has been planned. Its name: the Thirty Meter Telescope. However, there has been much resistance to this telescope and protesters halted the construction in 2015. Recently, court rulings have sided with the telescope. On our drive around the island, we saw many "Save Mauna Kea" signs advocating against the telescope. While I generally side with preservationists, I don't see the merits of stopping this important eye into the sky and hence the history of the universe. Furthermore, the telescope will be recessed from the summit. Personally, I find the proposed design aesthetically pleasing and think it would contribute to the legacy and myth of the mountain.
We hitchhiked down and arrived to Nāmakanipaio Campground at Hawaii Volcanoes National Park. Due to special circumstances called partial government shutdown, the campground was not collecting fees. This happened to be the most luxurious car camping spot we stayed on the Big Island.
Day 6: Volcanoes National Park
Due to the longest government shutdown in U.S. history, a higher percent of the lands at Volcanoes National Park were forbidden than usual. Therefore, we are substituting this part with the itinerary we would have liked to do were the park fully open.
We had planned to hike the Nāpau Trail into the backcountry, where one can witness lava flows and steam vents:
Behold the gigantic Cibotium menziesii (Hawaiian Tree Fern):
Instead we had to settle for some déjà vu backcountry solitude:
Day 7: Volcanoes National Park
We did get to walk along Rim Drive to get a nice vantage point of Kīlauea Crater.
After seeping lava continuously for 35 years, Kīlauea and its subordinates experienced increased volcanic activity last summer. During this period, the magma exhausted itself. Hence, there was no lava anywhere on the Big Island for the duration of our visit.
On the night of day 7, we camped at Whittington Beach Park, which was scenic and only very slightly sketch. We dined at both the southernmost bakery and southernmost restaurant in the United States (both recommended), located in the town of Naalehu.
Day 8
On day 8, we made it near the southernmost point in the United States. We hiked to the Green Sand Beach:
I was happy to see most other visitors hiking rather than purchasing a ride on a 4×4, since the automobiles do considerable damage to the landscape, which made for a nice photo:
On the hike we were reminded of the onslaught of plastic pollution humans are littering the ocean with:
We must all do our part to address this crisis.
Then we went to the southernmost point cliff jump where there were many fishermen but few jumpers. I was worried that the moderately high surf would make connecting with the ladder following the 40-foot jump dangerous. But,
So we walked the plank, me then her.
We both enjoyed the jump. Although, I think
Bonus
We were in Hawaii before this vacation for a conference called the Pacific Symposium on Biocomputing. At the conference, I led a working group on Manubot, where participants learned how to use Manubot for collaboratively writing a manuscript.
During this time we checked out some local attractions such as Hapuna Beach. We even rented convertible BMWs, which were free to borrow:
Makalawena Beach was nice and included a resident seal. We imitated petroglyphs with our shadows:
Sunset walking back from Makalawena Beach was picturesque:
We had parked at the southern trailhead. Apparently, the park closes at 7:00 PM. Be out by then. A security personal tailgated us for 10 minutes with great rage. To this person's dismay, we cleared the gates at 6:59 PM, so he was not able to ticket us.
In conclusion, sea turtles: