Day 5 (2/3).
After a few hours of sleep, we returned to Lake Mashu to seek for another way to enjoy the crater lake and its surrounding landscape. This time, we took the 14.4km trail along the crater rim up to the top of Mount Mashu or Mashu-dake (857m) in a 4-6 hour walk. We read from guidebooks and online research that the scenery of Lake Mashu from the top of Mount Mashu would be very promising. At the onsen village of Mashu, we stopped by a bento takeout restaurant (ほかほか弁当) to order two rice dishes for breakfast, then headed over to Lake Mashu’s Viewpoint 1 to begin our hike.
A terrain model at the visitor centre of Viewpoint 1 gave us a rough idea of the hike, from the trailhead at the south of the crater lake to the peak of Mount Mashu east of the lake.
Soon after the trailhead, we reached the first open lookout of Lake Mashu.
The trail took us along the crater lake on one side, and open plains and distant volcanic landscape on the other.
Most of the trail ran along the rim of the crater lake with little shades.
From time to time, wooden signage indicated how far we were from our destination.
There was pretty much only one trail for most of the time. It was almost impossible to get lost.
Near the peak, we could fully appreciate the volcanic landscape of the area, including the lush green forest in a caldera next to Lake Mashu.
After the steepest section of the trail, we finally reached the summit of Mount Mashu, a small lookout that offered wonderful panoramas of the area’s volcanic scenery.
From the top, the volcanic scenery of Lake Mashu area was fantastic.
Looking west, the ridge of Mount Mashu led to the eastern edge of Lake Mashu.
Clouds were getting in with the wind but we still had blue sky for most of the day.
Looking north, we could see the eastern tip of Lake Mashu.
With a circumference of about 20km, Lake Mashu is one of the most famous lakes in Hokkaido. We stayed for 20 minutes or so at the summit all by ourselves, and began the descending journey when another couple followed our footsteps and replaced us at the peak.
Claimed as the clearest water in the world, the beautiful blue colour of Lake Mashu was simply stunning when viewed from above.
The wind was mild and the air was dry, such a perfect day for us to hike at Eastern Hokkaido.
From afar, the tiny island in the middle of Lake Mashu looked funny.
The hike would offer a different scenery if we were to visit in the autumn.
The beauty of Lake Mashu never cease to impress us, despite we were a little tired near the end of the hike.
Finally back to Viewpoint 1, the colour of Lake Mashu had changed due to the constantly moving clouds. From dawn to mid afternoon, we had fully experienced the sheer beauty of the famous caldera lake. After about 5 hours of walking, we returned to Viewpoint 1 and treated ourselves with local chocolate milk and a slide of Yubari melon (夕張メロン) , the king of Hokkaido fruit which just broke the record in May 2019 with a pair fetching 5,000,000 JPY (47,000 USD) in auction.
Day 5 (1/3).
Leaving Shitetoko behind, we drove southwest towards another natural marvel of Eastern Hokkaido, the Akan Mashu National Park (阿寒摩周国立公園). On the lush green plains, stratovolcanoes emerged from the horizon, revealing the violent past of the local geology. Hot springs, crater lakes, and stratovolcanoes define the characteristics of the area, and have led to the creation of the national park in 1934. Just 15 minutes of drive from the Viewing Platform 1 of Lake Mashu (摩周湖), we checked in at Masyuko Youth Hostel (摩周湖ユースホステル). That night, we woke up at 2:30am and drove to the Viewing Platform 1 of Lake Mashu to watch the sunrise, a famous scenic sight in Hokkaido. In the summer, the sun rises at around 3:30am in Hokkaido, leaving us little time for sleep.
On our way to Akan Mashu National Park , we could see stratovolcanoes rose from the horizon in a distance.
Masyuko Youth Hostel offered us a comfortable place for a short rest before venturing out again to watch the sunrise.
Arriving at Viewing Platform 1 of Lake Mashu, we were stunned to see a sea of clouds blanketed over the area of Kawayu Onsen (川湯温泉).
Looking down from Viewing Platform 1, the water of Lake Mashu appeared like a crystal clear mirror.
Claimed as the clearest lake in the world (with transparency measured at 41.6m back in 1931), Lake Mashu is a beautiful crater lake where visitors can enjoy the scenery from two viewing platforms along the crater rim. The clarity might have slightly declined in recent decades, but Lake Mashu is still nevertheless an extremely beautiful water body.
Occasionally sea of clouds would appear over Lake Mashu, but not during our visit.
Soon the sun emerged behind the distant mountains to the east.
We enjoyed moments of tranquility at the viewing platform.
Several tourists and photographers stood among us at the viewing platform to watch the sunrise.
While the sun gradually rose over the crater lake, the moon still lingered in the sky behind us.
When the sun was up, the blue water and lush green surroundings changed the ambience of Lake Mashu into a different picture.
The deep blue Mashu Lake looked mysterious and surreal, almost too beautiful to be true.
The rim of the crater lake is now covered by dense vegetation.
On the other side, clouds and fog continued to cover the foot of Mount Iō (アトサヌプリ) and the Kawayu Onsen (川湯温泉) area.
The entire Kawayu Onsen (川湯温泉) area was blanked in thick fog.
Over to the southwest we could see the stratovolcanoes near what could be the Lake Akan area.
Down in Lake Mashu, the small island stood like a feature sculpture at the centre.
The sea of clouds at Mount Iō (アトサヌプリ) and Kawayu Onsen (川湯温泉) subsided a little as the sun rose further up.
Moisture and thin mist emerged over the water of Lake Mashu. The mist moved rapidly over the water as if dancing. At one point thicker mist gathered over the small island like a cotton shield.
The mist over the island soon dispersed into thin air. As the sun reached high in the sky, we returned to the hostel for another few hours of sleep before coming back to Lake Mashu for hiking later in the day.