I had to research Christopher Tunnard for our history session in studio, here's a picture of his thinned woods at Bentley wood. This image was taken from Modern Landscape Architecture: A Critical Review by Marc Trieb. I recommend this book as it contains some brilliant analytical essays from the modernist movement in landscape that complimented and then criticised the contemporary movements in architecture of the Le Corbusier and Mies van der Rohe.

Barcelona Pavillion - Mies Van de Rohe

I've uploaded my slideshow of Tunnard research below.