This online book was intended to be included with the Stonehenge3D computer software that was created for English Heritage (2002-04), but after political infighting within that organisation the project was dropped. (All licensing therefore reverts to the author -me.)
To this day, over 20 years later, they still have no computer-based 3D simulations for sale. 🤦 Feel free to download or print. - JB
You can find the software download of the Stonehenge3D walkaround on the Downloads Page of this website.