Hollow, an interactive, participatory documentary that explores post-industrial small-town America through the voices and ideas of people living in McDowell County, W.Va., launched on June 20. The immersive, online experience combines video portraits, user-generated content, interactive data, grassroots mapping and soundscapes on an HTML5 site and an accompanying community tool.\r \r Hollow, which is a Tribeca Film Institute New Media grantee, allows users to experience the stories of over 30 residents, captures user-input data and provides story updates to featured community members through an embedded WordPress site, Holler Home.