Long Coc tea hill is located in Tan Son district, Phu Tho province, is considered one of the most beautiful tea hills in Vietnam, with many large and small hills alternating with successive messages. At the time of late autumn and early winter, the tea hills are covered with fanciful fog. There are early mornings, dew, clouds floating on the tea hill, creating a picture of nature like a fairyland. In addition to bringing high economic efficiency, the tea hill is also an attractive eco-tourism destination.