Here is some great on bike footage of the crashes, neutralised racing and the famous Mur de Huy. Stage three of the 2015 Tour de France served up plenty of action.
https://www.youtube.com/watch?t=17&v=ehFyYxUfIZw
Stage highlights
https://www.youtube.com/watch?v=wMDmaI2SS_g
https://www.youtube.com/watch?t=17&v=ehFyYxUfIZw
Stage highlights
https://www.youtube.com/watch?v=wMDmaI2SS_g