ようこそ 日本一のモグラえき 土合へ Translates to something like: "Welcome to Doai, Japan's number one mole station (mogura-eki)".

Welcome to "Japan's No. 1 Mole Station"

-The staircase is 338 meters long and has 462 steps.

Climb the stairs to the top of the 143m (24 steps)

Go through the connecting passage and you will reach the ticket gate.

The elevation of the down platform is 583 meters above sea level, and the elevation of the station building is 653.7 meters, meaning the difference in elevation between the station building and the down platform is 70.7 meters.

It takes about 10 minutes to get to the ticket gate.

Please be careful of your step when climbing.

Doai Station

Autotranslate below. The 'unclear' was added by me and originally read "Welcome to Japan's No.1 Google", which seems like it might be ab error.

Welcome to "Japan's No.1 [unclear]"

・This staircase is 338 meters long and has 462 steps. Climb up the steps and go through a 143 meter (24 step) connecting passage to reach the ticket gate.

Also, the altitude of this downhill platform is 583 meters above sea level, and the altitude is 653.7 meters, and there is a difference in elevation of 70.7 meters between this and the downhill platform.

It takes approximately 10 minutes to reach the ticket gate.

Please be careful where you step.

Visual contrast with blood and organs.

Same reason they wear blue too: Less visual strain on the eyes.

Most colors are differentiated in the segment between yellowish green and reddish orange, passing through yellow and orange.

Inside the green segment, there is little color differentiation. All the green hues between 510 nm and 540 nm wavelength look pretty similar, while in the yellow-orange segment a change in wavelength of 1 nm may cause an easily noticeable change in hue.

Also in the blue-green segment, between blue and green, there is easy color differentiation, with the hue changing strongly even for small wavelength differences.

Inside the red, green and blue segments there is little ability to differentiate the colors, unlike in the regions between these segments. This is exactly as expected, because only in the segments between the primary colors you have 2 photoreceptors in the eye that are excited simultaneously, in a ratio that is a function of the color frequency/wavelength. In the frequency/wavelength segments where only 1 of the photoreceptors is excited, the ability to differentiate hues is lost.

I'd assume that's context dependent? Nature (natural green) vs things that look natural but aren't. e.g, green hue on a building? But I'm no expert on this :)