Who Digs Author:Michael Rex High up in the tree, someone is building a nest. Deep in the desert, someone is digging for dinosaurs. Lots of busy workers are building and digging all over the world--but who are they? Lift the flaps up and pull the flaps down to find out! Michael Rex's bright, vibrant illustrations explore the exciting worlds of industry and nature with cleve... more »r scene-changing flaps in these two new interactive gatefold books. See also Who Builds?« less