Before we say 30 degrees north latitude, let's find out the latitude and longitude. Latitude and longitude are the combination of longitude and latitude, forming a coordinate system, which is called geographical coordinate system. It uses the spherical surface of three-dimensional space to define the space on the earth, and can mark the spherical coordinate system anywhere on the earth.

On the earth at 30 degrees north latitude, there are many wonderful natural landscapes, as well as many mysterious phenomena and unsolved mysteries. A series of phenomena at 30 degrees north latitude have certain inevitable connections. It is called the umbilical cord of the earth. The magnetic field, electric field and gravity field at this latitude have great influence on the earth's environment. The unsolved mystery of 30 degrees north latitude is waiting for people to explore. Four ancient civilizations pass through here. Ancient China, ancient Egypt, ancient Babylon, ancient India. There is also the mysterious Mayan civilization, which gave birth to the origin of human civilization.

There are many mysterious and interesting natural phenomena near 30 degrees north latitude. For example, the Mississippi River in the United States, the Nile River in Egypt, the Euphrates River in Iraq and the Yangtze River in China all enter the sea near 30 degrees north latitude. Mount Qomolangma, the highest mountain on earth, and Mariana Trench, the deepest in the western Pacific Ocean, the highest and lowest points of the earth all fall around 30 degrees north latitude.

At this latitude, miracles and mysterious cultures abound. In China, there is a world-famous spring tide of Qiantang River. Huangshan Mountain in Anhui, Lushan Mountain in Jiangxi, Emei Mountain in Sichuan, Tianzhu Mountain in Anhui, Shennongjia in Hubei, Sanxingdui in Sichuan and Hemudu in Ningbo are all at 30 degrees north latitude.

Shennongjia

Tide of Qiantang River

At this latitude, there are many famous mysteries. The mystery of Egyptian pyramids and the Sphinx, the mystery of advanced Mayan astronomical calendar civilization. The mystery of the mysterious disappearance of ships and planes in Bermuda Triangle. The mystery of ancient hanging gardens and Babel. Two discontinuous mysteries of the Yangtze River in Taixing, Jiangsu Province. The mystery of Shennongjia savage. The mystery of Sanxingdui civilization. The mystery of Death Canyon in California, USA.

Babylonian city

pyramid

Pyramid of Babylon

hanging garden

Sanxingdui civilization

In addition to the above, there are many other magical places near 30 degrees north latitude. I won't go into details here. If you are interested, you can read the book "Mysterious 30 degrees North Latitude". It describes in detail the magic of 30 degrees north latitude.