Medics say Lisa faces pain but in no danger
Psychological and medical experts last night indicated that a M3 protester, who has chained herself to a tunnel close to the works, may be able to bear her month-long protest and could stay there for a long time.
Lisa "Squeek" Feeney, from Dublin, chained herself to a jack at the bottom of a tunnel which has been dug some 20m deep at the side of the site.
She said that she has enough food to sustain her for at least a month and has access to 40 gallons of water.
Ms Feeney, who had been staying at the entrance to the tunnel with her boyfriend Paddy O'Kearney, entered the tiny 4ft-wide space on Thursday.
A walkie-talkie system had been set up to communicate with her, while a wind generator is supplying air into the tunnel.
Dr Michael Byrne, of the Irish Association of Psychologists and Mental Health said: "A confined space may be more bearable if someone is in there voluntarily."
Dr Martin Daly of the Irish Medical Organisation said while Ms Feeney may endure some back and muscle pain she could survive for at least a month.
"If you have a supply of water and food you could physically sustain yourself in a situation such as this," he said.