11/29/2008 · Yellow Trail from Pearl Hill State Park to Willard Brook State Park, Ashby, Massachusetts ≈ 8½ × 5½' (2.6 × 1.7 m) ID is uncertain
11/29/2008 · Yellow Trail from Pearl Hill State Park to Willard Brook State Park, Ashby, Massachusetts ≈ 6 × 4' (1.8 × 1.2 m) ID is uncertain
11/29/2008 · Yellow Trail from Pearl Hill State Park to Willard Brook State Park, Ashby, Massachusetts ≈ 31 × 21" (78 × 52 cm) ID is uncertain