Under fire organisers of the 2014 Sochi Winter Olympic Games in Russia have insisted that preparations are on track.
The project is under intense scrutiny from the International Olympic Committee (IOC), amid allegations that site investgation was poor and transport projects are under threat.
Reports that construction was delayed because of inadequate site investigations were denied by Olympstroy spokesman Alexandra Kosterina.
Earlier this year, the BBC reported claims by consultant Sergei Volkov that insufficient research had put the project at risk from major landslides, mercury and uranium deposits, and coastal storms.
The World Wildlife Fund also criticised Olympstroy in February for “out of control”, “poor quality” construction.
But Kosterina said there has been “thorough geological research”. “We do realise our responsibility in terms of the unique climate that Sochi presents” she said,adding that Olympstroy is under pressure from the IOC, which makes regular visits and recommendations.
There is also pressure to complete the associated transport projects, including a 50km integrated road and railway that will connect the coastal Olympic Park with skivenues in the mountains.
The IOC inspects this project six times a year.