Wanderer5, don"t know if you recall our discussion a bout a yr back when i ask the board about the black section of the VTEM on the Groves. Looking at the North East section refering to the black spots amongst the purple magnetic anomalies, i happen to bump into a fellow knowen as a Dr. of geology and ask his opinion what causes this black spoting on a VTEM. I guess it was his conclusion that their was no reason why as instead of black it should have atleast showed up yellow as a poor reading. I guess it was his opinion that the reading was poor , mechanical or none conclusive for reason. I no others on board also have had thought thoughts and would like to here. Thanx. Traps7