Gumai Beel is one of the largest paddy fields in Bangladesh which is located at Rangunia upazila in Chittagong. The area of this beel starts from Mariam Nagar of Rangunia upazila and lasts up to Nishchintopur of Rangamati. Another area of the beel is situated in Kaptai of Rangamati. The amount of rice that can be produced from this vast region, it can provide two-and-a-half-day rice for all the people of the country. When it’s autumn, the fields look golden. This beel produces Amon and Boro mainly. But recently, the adjacent land to the main road of this beel has been filling up with various types of constructions.