Tarn Bluff (1870m) is a worthy objective on the divide between the Geehi and Valentine Rivers and looks out over the central Jagungal Wilderness Area, KNP.  Although only 12.8km direct from the Gungarlin valley, the bluff and its tiny nearby tarn will require some effort to reach. We plan to leave the cars beside the Snowy Plains Road at about Lat -36.19112 Long 148.55197, head eastwards along a right of way to the KNP, then via Teddys Creek, Little Doubtful Gap, Kidmans Hut, and Cup and Saucer Hill to reach Bluff Tarn (Lat -36.19702 Long 148.41002). Some scrub.  Requires warm clothing, warm tents, and warm sleeping bags. Very exposed at 1900m near Cup and Saucer Hill and beyond, we will need good weather to proceed beyond the upper Burrungubuggee River area. Map: http://www.gpsvisualizer.com/draw/?bg=tw&z=12&c=-36.203628,148.416166&marker=Tarn Bluff, then pan and zoom around, Lat Long and rule tools are on the lower left. Also see: https://maps.six.nsw.gov.au/ and use the x,y tool on the top tool bar.