Question: The Clans Are Still Marching is a live DVD released by German heavy metal band Grave Digger on 7 March 2011 via Napalm Records, it was filmed live at the world-famous summer open-air heavy metal music festival, it takes place annually in the village of Wacken in Schleswig-Holstein?

Context paragraphs:
War Games (Grave Digger album): War Games is the third studio album by the German heavy metal band Grave Digger, released in 1986 through Noise Records.

Clash of the Gods (album): Clash of the Gods is the 16th album from German heavy metal band Grave Digger, which was released on 31 August 2012 via Napalm Records.

Stronger Than Ever (album): Stronger Than Ever is the fourth studio album by the German heavy metal band Grave Digger.  However, they changed their name to just "Digger" for this release.  Retrospect Records, a little-known record label, very briefly issued a re-release of the album on CD in 2005.  The CD was released with presumably no involvement from the band and is considered a bootleg.  The CD is no longer available and the only official versions of the album that were released by the band are the vinyl and cassette versions.  To this day it remains the only album in Grave Digger's catalog to not receive an official CD release.  "Shadows Of The Past" borrows two lyrical lines from "Yesterday", a song released on Heavy Metal Breakdown , Grave Digger's debut album.

The Best of the Eighties: The Best of the Eighties is a compilation album by German heavy metal band Grave Digger released in 1993.  It consists of music from their earlier albums from the 1980s.  It also has a few rare tracks on it.

Heavy Metal Breakdown: Heavy Metal Breakdown is the debut album by the German heavy metal band Grave Digger which was released in October 1984 by Noise Records.

Ballads of a Hangman: Ballads of a Hangman is the 14th studio album by the German heavy metal band Grave Digger, and was released on 27 January 2009.  It is the first Grave Digger album to feature two guitarists, the only one to feature Thilo Hermann who co-wrote the album but was asked to leave soon after its release and also the last one with Manni Schmidt who left the band in October 2009 due to personal differences with Chris Boltendahl.

The Clans Are Still Marching: The Clans Are Still Marching is a live DVD released by German heavy metal band Grave Digger on 7 March 2011 via Napalm Records.  It was filmed live at the world-famous Wacken Open Air festival on 6 August 2010, where they performed their Tunes of War album in its entirety.

Return of the Reaper (album): Return of the Reaper is the 17th album from German heavy metal band Grave Digger, which was released on 11 July 2014 via Napalm Records.  This is the final album to feature H.P. Katzenburg on keyboards.

Healed by Metal: Healed by Metal is the 18th studio album by German heavy metal band Grave Digger, which was released on January 13, 2017 via Napalm Records.  This is the first album to feature new keyboardist Marcus Kniep as The Reaper since H.P. Katzenburg's departure in 2014.

Wacken Open Air: Wacken Open Air (W:O:A) is a summer open-air heavy metal music festival.  It takes place annually in the village of Wacken in Schleswig-Holstein, northern Germany, 80 km northwest of Hamburg.

Supporting paragraphs: The Clans Are Still Marching Wacken Open Air
Answer: Wacken Open Air