Dahl Al Hamam Family Park is located in Madinat Khalifa, Doha, at the corner of a roundabout bear its name, intersection of Al Markhiya St and Arab League St. The park is so named because of a cave inside it, Dahl means cave. I found it also means House of the Dove. The cave is apparently closed and fenced on safety grounds. Visit the following link to know more about the cave: http://www.saudicaves.com/hamam/index.html
Established in 2004 on an area of 93,297m2, Dahl Al Hamam is a very well equipped park for family, only. Some of the facilities and services include sports activities area (football, basketball, skateboard), live shows (open air theater), occasion yard, children play area (big shaded area and small open playground), and restaurant and food court. The park also has ample parking lots close to the park. Free wifi add as a major advantage. Unfortunately, no prayer room or mosque available although one may walk few minutes across the park for praying.
Coordinate: 25°19’58″N 51°28’53″E
Here are some pictures taken on 22 & 23 March 2012.