The DEMO version only includes 4 pages:
http://p3mountains.org
http://p3mountains.org/post/a-toxic-cocktail-in-mountain-lakes.html
http://p3mountains.org/blog-1.html
http://p3mountains.org/publications.html

It is possible to download these free files and install them on your server, so you can test how the site works.
Visit https://www.waybackmachinedownloader.com/en/buy-wayback-machine-downloader-recover/ to buy a fully functioning site.
Go back to the index page