CIMG4991 Making progress climbing a semicircular ladder Posted onJune 30, 2021June 30, 2021 E at 1 year and 9 months old: February 2007 640 × 480 CIMG4991 Making progress climbing a semicircular ladder CIMG4990 1 year 9 months: a semicircular ladder is tricky — easy to fall through the gap February 2007