Selecting the category Field Trip and Good Practices and the key word volcano will display all records that meet the three criteria. It is imperative that we respect and protect the intellectual property of the individuals who designed and implemented the resources. Find out if they are prepared for what might be a fairly high demand on their server. It would be easy to strip out the text and accompanying images and put them on your server. This raises serious ethical issues.
Most developers are proud of their efforts and it is always good form to ask.