Second photo is of a different clump, but same species. Included to show the inside color.
Chimney Tops Trail.
All over the areas of the park where we were doing vegetation sampling!
Scleroderma citrinum, commonly known as the common earthball, pigskin poison puffball, or common earth ball, is the most common species of earthball in the UK and occurs widely in woods, heathland and in short grass from Autumn to Winter. Scleroderma citrinum has two synonyms, Scleroderma aurantium (Vaill.) and Scleroderma vulgare Horn.