This is to take pictures for the Picture Post Project (http://picturepost.unh.edu/), a project that asks people to document the changes in the environment around them. The idea is to select a point in nature and take pictures over time to track changes over long periods of time. I encourage you to join this citizen-science/crowd-science project.
My approach was to use roadsigns and a DIY platform. There are other ideas proposed at the gallery of Post Designs (http://picturepost.unh.edu/gallery-posttypes.jsp).
Example of one of the posts: http://picturepost.unh.edu/post.jsp?postId=269
See the instructions in the PDF and let me know your comments and questions.