A dedication ceremony will be held at 10 a.m. Saturday for Walker Mill Regional Park, 8840 Walker Mill Rd., Ritchie Heights.

The park is the first regional park to be developed inside the Capital Beltway in Prince George's County. It encompasses 226 acres, of which 26 have been developed with two tennis courts, two softball fields, a combination soccer-football field, a baseball field, two basketball courts, a sheltered area, a trail system and parking for 101 cars.

Seventy-five percent of the funding for developing Walker Mill came from Maryland's Program Open Space, with the rest from the Maryland-National Capital Park and Planning Commission. The park was built by Pleasant Excavating Co. Inc. at a cost of $417,767.

Included in Saturday's ceremony will be the dedication of a baseball field in memory of the late Thomas H. Walton, a community activist from Forestville, and a tree planting in memory of the late E. Michael Roll, a former mayor of District Heights.

A playground sculpture, entitled "Moment of Flowering," which is meant to be viewed as an artistic creation as well as played on, also will be dedicated. The structure is by county artist Bob Sanabria.