Cumbum Tank is the historical irrigation tank formed by damming the Gundlakamma river by earthen bund, which is the highest in the Presidency (80 ft), with 100 yards length. The tank spread over an area of 9 square miles (23 km), and irrigates 6,944 acres (28.10 km) with over 3,500 acres (14 km) is second cropped in a good year. A more successful work is the Cumbum tank, formed under native rule by damming a gorge of the Gundlakamma river. Cumbum tank is accessible both by rail and road 27 km distance from Markapur. The main source of water for Markapur tank flows down from Cumbum Tank. 

One can easily spend two days in this town, as there are lots of places to see.