Low altitude survey flight over the Dutch coastal dunes using the SkyTEM system to map fresh ground water deposits, with the helicopter flying at a height of about 75 meters. The huge 30-meter probe is attached to a 40-meter long cable system, meaning that the probe is about 35 meters above the ground and only about 15-20 meters above the higher trees.

Near head-on view of a SkyTEM survey flight to map deep fresh ground water deposits. This photo clearly shows the details of the complicated 40-meter long cabling system that holds the huge 30-meter probe. The entire setup is very impressive, and is making the helicopter look very small.

Doing a survey flight over the Dutch coastal dunes for mapping deep fresh ground water deposits to a depth of 150 meters. The helicopter is flying many parallel tracks 50-200 meters apart over the area, at a height of 75-100 meters. A huge probe with a diameter of 30 meters is attached to a 40-meter long cable system below the helicopter, see here.

Survey flight by SkyTEM over the Dutch coastal dunes, mapping deep fresh ground water deposits to a depth of 150 meters. The helicopter is flying parallel tracks 50-200 meters apart, at a height of 75-100 meters. The huge probe (30 meters in diameter) is attached to a 40-meter long cable system.

Helicopter was dropping rock flour above the region for a few weeks.