Slope illusion 17
Outdoor tilt illusion where an ascending slope appears to descend or a descending slope appear to ascend
e.g. Magnetic Hill in Canada; Wikipedia
since September 13, 2014
Possible slope illusion in Hokkaido, Japan
September 22, 2013, reported by Akiyoshi Kitaoka and Seiichi Tsuinashi, supported by a JSPS kaken-hi grant and R-GIRO
This road is thought to be a descent but the farther slope appears to be an ascent. This road was so heavily traveled that we could not measure the slope. Then, there remais a possibility that this is not an illusion.
Copyright Akiyoshi Kitaoka 2013 (September 22)
Seiichi's slope illusion pages
Slope illusion 16 (Illusory slope in Biei, Hokkaido, Japan)
Slope illusion 15 (Roller Coaster Road in Kamifurano, Hokkaido, Japan)
Slope illusion 14 (Illusory slopes in Tsunan and Tokamachi, Niigata, Japan)
Slope illusion 13 (Slope-ascending water in Tsunan-twon, Niigata-prefecture, Japan)
Slope illusion 12 (Slope-ascending water in Ujitawara-town, Kyoto-prefecture, Japan)
Slope illusion 11 (Skewed staicase of the Shigaraki Ceramic Cultural Park, Shiga, Japan)
Slope illusion 10 (Skewed staicase of Shomaru railway station, Saitama, Japan)
Slope illusion 9 (Illusory slope in Minamitane-town, Tanegashima-island, Kagoshima, Japan)
Slope illusion 8 (Illusory slope in Nakatane-town, Tanegashima-island, Kagoshima, Japan)
Slope illusion 7 (Danjo-zaka and Okyo-zaka in Amakusa-Shimojima, Kumamoto, Japan)
Slope illusion 6 (Slope-ascending river in Miyama, Nantan, Kyoto, Japan)
Slope illusion 5 (Ghost slope in Okagaki, Onga-county, Fukuoka, Japan)
Slope illusion 4 (Slope-ascending water in Tanushimaru, Kurume, Fukuoka, Japan)
Slope illusion 3 (moving-back slope in Hashikami, Aomori, Japan)
Slope illusion 2 (Mysterious slope in Towa, Iwate, Japan)
Slope illusion 1 (Mystery zone in Yashima, Takamatsu, Kagawa, Japan, etc.)