Here is a simple video of the proposed walkthrough for the Landscape Observatory project located at the lava fields in the Mojave National Preserve. Notice the changes in the foreground, not only in the look of the rocks, but also in the plant life change.
I have found while out there that there are eight different levels of rock throughout the lava field where the lava tube is located. Within these eight different zones there are six different plant habitats that I have seen. So going into the design phase for this project I must look at how to express these six different plant regions along the nearly two mile hike through the lava fields.
So by looking at the video you can clearly see that there are differences in the rock layers and what plant habitats that can grow in these different regions. Now I must design different observation nodes to help identify and express these differences.