Hi @Ben .
Deportes Concepción was once (not long ago), one of the bigger non Santiago clubs in Chile, playing in the country's second biggest city, Concepción, in the centre-south of Chile. The stadium, county owned "Alcaldesa Ester Roa Rebolledo" is so big because it was planned as one of the venues for the 1962 World Cup, despite not making the final list (in fact, it ended up being opened after the World Cup ended, in September 1962).
They had a couple of good stints in the First Division (top tier), in the early seventies, finishing 2nd in the League in 1975, and then in the early nineties, where they managed to sneak into Copa Libertadores in 1991, after winning the Libertadores Playoff in 1990 (They lost in the Round of 16, against América de Cali). Normally they have been an "elevator team" shifting between first and second tiers, until they started having financial trouble in 2016, where they ended up being disaffiliated by the Chilean FA, due to their inability to pay their players and staff. After the insolvency declaration, the President of the supporter's part of the club (owner of a part of the property), decided to take charge of the situation and spearhead the return of the club, while also try and prosecute the responsibles for the club's debt and disaffiliation. Their plan is to start down at the fifth tier and with the support of their fans (12,000 fans came to see their first big pre-season game, amazing even for a first division side not named La U or Colo Colo), they expect to bring the club back to life. There's a pretty good doccumentary feature on the issue, named "Tu Ciudad no te Abandona" ("Your City Doesn't Forsake You"), here's the trailer, albeit in Spanish, without subtitles.