Olhon is a project conducted by Zairo (research, on-site recordings and treatments) and Massimo (technical assistance, treatments and mixing) and SINKHOLE is their second album after their CD released back in 2001 titled "Veiovis". Olhon isn’t properly a musical project because their main activity consist of treatment of field recordings taken into particular places. For this release the duo chose a sinkhole called Pozzo del Merro, located at few Km from Rome. Hidden by a dry part (where there’s some luxurious vegetation) and by a little lake, the sinkhole goes deeply into the ground for a total of 1016 feet. The hole is also divided into four different parts named after the various explorative immersions. The recordings have been taken at different depths of the Pozzo del Merro thanks to particular microphones and software. The original recordings then have been treated into the recording studio avoiding the incidental creation of musical structures. The final result is an obscure ambient album that will scare the hell out of you at each noise. These are the sounds of our mother earth and I can tell you that she’s mad at us!