An airfoil for a gas turbine engine comprising: an airfoil including spaced apart pressure and suction side walls (86, 88) joined at leading and trailing edges (82, 84) to provide an exterior airfoil surface extending in a radial direction from a platform to a tip; a cooling cavity provided between the pressure and suction side walls (86, 88) near the trailing edge, the cavity includes an interior region bounded by a first cooling fluid exit region at the trailing edge and a second cooling fluid exit region at the tip, the first and second exit regions (98, 100) arranged at an angle relative to one another, the first and second exit regions (98, 100) are respectively in low and high pressure regions (104, 106) relative to one another; and first and second pedestal groups (110, 112) respectively arranged at the first and second exit regions (98, 100), the second pedestal group has first and second elongated pedestals (114, 116) each terminating in an end (120, 122) wherein a natural flow direction (F 1) extends from the interior region to the first exit region in the low pressure region, and a desired flow direction (F 2) extends from the interior region to the second exit region; wherein the second pedestals have a length (L 2) which is longer than a length (L 1) of the first pedestals and the ends of the second pedestals extend beyond the ends of the first pedestals in the desired flow direction (F 2), characterised in that: the ends of the first and second pedestals (114, 116) are recessed from the tip by first and second distances respectively and in that the first distance is greater than the second distance. an airfoil including spaced apart pressure and suction side walls (86, 88) joined at leading and trailing edges (82, 84) to provide an exterior airfoil surface extending in a radial direction from a platform to a tip; a cooling cavity provided between the pressure and suction side walls (86, 88) near the trailing edge, the cavity includes an interior region bounded by a first cooling fluid exit region at the trailing edge and a second cooling fluid exit region at the tip, the first and second exit regions (98, 100) arranged at an angle relative to one another, the first and second exit regions (98, 100) are respectively in low and high pressure regions (104, 106) relative to one another; and first and second pedestal groups (110, 112) respectively arranged at the first and second exit regions (98, 100), the second pedestal group has first and second elongated pedestals (114, 116) each terminating in an end (120, 122) wherein a natural flow direction (F 1) extends from the interior region to the first exit region in the low pressure region, and a desired flow direction (F 2) extends from the interior region to the second exit region; wherein the second pedestals have a length (L 2) which is longer than a length (L 1) of the first pedestals and the ends of the second pedestals extend beyond the ends of the first pedestals in the desired flow direction (F 2), characterised in that: the ends of the first and second pedestals (114, 116) are recessed from the tip by first and second distances respectively and in that the first distance is greater than the second distance.