Lift is an anomaly cut from S.T.A.L.K.E.R.: Shadow of Chernobyl. However, it is implemented in a few small areas in the Zone, mainly near gravitational anomalies. It is extremely hard to explore one because it has no visual effect. One of it may be found near the fallen chopper in Pripyat stadium.
"A harmless anomaly, temporarily negating normal gravity. Manifests itself as an area - usually several meters in diameter - where Earth's gravitational pull is greatly reduced. Forms the Pellicle artifact."