There are multiple artists with this name: 1) Dark ambient duo from the United States, formed by Michael J.V. Hensley (Yen Pox, Blood Box) and Jonathan Canady (Angel of Decay, Deathpile, Blunt Force Trauma, Dead World, The Urge Within). 2) Hollow Earth is a hardcore band from Metro-Detroit, Michigan, United States, featuring guitarist Mike Moynihan, the former lead vocalist of Shai Hulud. Forming in November of 2011, they have released 2 songs from their debut EP, We Are Not Humanity which can be previewed and downloaded from their bandcamp page http://hollow-earth.bandcamp.com/.

Read more about Hollow Earth on Last.fm.