From Hirakata-city, Osaka-prefecture, Japan

I wrote a formula using mathjax. For the format, this site will be helpful \sum_{ k = 1 }^{ n } k^2 = \overbrace{ 1^2 + 2^2 + \cdots + n^2 }^{ n } = \frac{ 1 }{ 6 } n ( n + 1 ) ( 2n + 1 )  \begin{eqnarray} \sum_{ k = 1 }^{ n } k^2 = \overbrace{ 1^2 + 2^2 + \cdots + n^2 }^{ n } = \frac{ 1 }{ 6 } n ( n + 1 ) ( 2n + 1 ) \end{eqnarray}

 

This summer vacation was nine days from August 7th to 15th, but after an unusual heavy rain and Corona's state of emergency, I ended up spending most of my time at home. However, since it was a break in the rain on August 11th and I happened to go to the southern part of Osaka, we decided to go a little further and go hiking on Mt. Kongo . Arrived at the parking lot of Mt. Kongo around 14:30, we started climbing with a little hiking feeling like Mt. Ibuki the other day, but it was quite hard. It is true that the road is paved, but the mountain trail is quite steep, and since I was relaxing at home during the holidays, my physical strength was weakened, and after walking for 30 minutes, it became almost swaying. Oops. Still, I managed to reach the summit in about 50 minutes. From the front of the mountaintop, the slope became gentle and my breath became quite calm. There are rest areas and an observatory near the summit, and the view from the summit was very good.   After that, we c

This year is the year of the Olympics, and since July 22nd to 25th was a four-day holiday, I went to Mt. Ibuki, which I had always wanted to visit, on July 24th. The four consecutive holidays were blessed with good weather, and this day was also a perfect day for a resort. It is open all night on the weekend of July and August, and although the Ibukiyama Driveway itself, which leads to the summit, closes at 21:00, but it was possible to stay at the summit by staying in the car. On this day, I left my house after 9 o'clock AM, arrived at Ibukiyama Driveway in about 2 hours using the highway, then ran Ibukiyama Driveway for about 20 minutes and drove to the Sky Terrace parking lot near the mountaintop. We stopped our car and walked from there to the summit for about 30 minutes, and arrived at the summit at 12:30. Ibuki Zyakosou ? Kawara Nadesiko? The area around the mountaintop was cool and really pleasant because it was cloudy on that day, but it became a little hot when the clouds