Which province is Longmen Grottoes located in?

Longmen Grottoes are located in Henan Province, specifically on Longmen Mountain and Xiangshan Mountain in Luolong District, Luoyang City, Henan Province. Longmen Grottoes is the largest treasure house of stone carving art in the world, with the largest number of statues. It was rated as "the highest peak of stone carving art in China" by UNESCO, ranking first in China Grottoes. Now it is a world cultural heritage, a national key cultural relic protection unit and a national AAAAA tourist attraction. Longmen was dug by Dayu when he was controlling water, and the legend of fish jumping over Longmen also happened here. Grottoes began in the reign of Emperor Xiaowen of the Northern Wei Dynasty, flourished in the Tang Dynasty and finally ended in the late Qing Dynasty. After 10 dynasties and 1400 years of construction, it became the longest cave in the world. Many colorful paintings were used when it was built, but many of them have faded today. Covered on the cliffs of the east and west mountains of Yishui, the length from north to south is 1 km. There are 2345 existing grottoes, with more than 1 1000 statues. Together with Mogao Grottoes and Yungang Grottoes, it is called the three largest grottoes in China, and later it is called the four largest grottoes with Maijishan Grottoes. Longmen Grottoes make the grotto art show the trend of China, which is a "milestone" of the grotto art in China. It has been built in Tianzhu, Silla, Tuhuoluo, Guo Kang and other countries, and found European patterns and ancient Greek stone pillars. It is the highest international grottoes in the world. There are more than 2860 inscriptions in Longmen Grottoes, which are called ancient forest of steles. Masterpieces: Twenty Longmen Pieces, Double-walled Longmen (Chu Suiliang's A Que Buddhist Shrine Monument and Song Zhenzong Longmen Monument). This is a masterpiece of China's calligraphy.