Bodies lay covered in blankets on the floor - victims of an artillery barrage by Syrian government forces.
Syrian activists and opposition groups said over 90 people were killed in the attack in the town of Houla in Homs province.
The man speaking in this video says that over 30 of the victims were women and children.
The video was posted on a social media website and cannot be independently verified by Reuters, and there has been no independent confirmation of the activists' accounts.
Other amateur video shows a march in the capital Damascus condemning the Houla attacks.
The violence is the worst since the state of a U.N. peace plan aimed at stopping the bloodshed in the 14 month long uprising against President Bashar al-Assad.
Simon Hanna, Reuters.