The electrode seems to exist more in the realm of the not-entirely-confirmed. According to the Center for Land Use Interpretation (CLUI), the electrode "is part of a high-voltage DC line connecting the Intermountain Power Plant (a large coal-fired plant in the middle of Utah that was built to serve Los Angeles) to a substation near Victorville." Which is all straight-forward enough, of course—until you read what is supposedly happening there.
"The ground itself has been used as a return electrode for the current," CLUI explains, "basically energizing the desert over the five hundred miles between here and the plant. The current enters the ground through a buried network of wires, laid out in a half-mile wide circle, with a small building in the middle, on the edge of Coyote Dry Lake."
The earth itself is acting as an electrical return battery for the California state electrical grid, energizing the landscape from below and storing power in the planet. The electrode itself is apparently "a grid of wires underground, but a small utility building is visible on the surface."
CLUI warns, however, that "the road is very sandy and may be impassable," and this proved true for us after a certain point on the unpaved road, sadly enough; after all, at this point you are driving on the outer edge of the Coyote Dry Lake, and the "road" is more like a beach than a linear piece of transportation infrastructure. In fact, we actually had to drive around a yellow traffic sign saying "END," pass underneath electrical wires, and tentatively head further north along a road rapidly turning into deep drifts of sand. There are a few more miles of this, CLUI suggests, before you reach the electrode.
In our case, driving an economy-class rental car unprepared for much more than your average city street, we had to stop.
Somewhere up ahead, the earth was crackling with buried electricity, a nervous system without nerves flowing through the ground around us. These peripheral networks and the designed infrastructural landscapes they sit within form an interesting contextual halo around our existing CES coverage, as it is these systems from which our gadgets and cities draw power.