Most images are from the rear of the turtle in order to not distract her from nesting.
The turtles lay their eggs in a three-step process. First it uses its rear legs to dig a narrow hole, about three-feet deep. Then the turtle lays about 100 eggs, but only the first fifty or so will contain the yolk necessary to develop into baby turtles. The rest of the eggs are for survival and keep the nest warm and humid. Then the turtle uses her rear legs again to cover of the nest.