Issaouane Erg confined to basins. Sand in the Issaouane Erg, below the level of the sand dunes, has accumulated to a depth of 20 to 30 meters. It has barchan dunes as well as star dunes of 300 to 430 meters high. The presence of both barchan dunes (which form due to unidirectional winds) and star dunes (which form when winds from various directions deposit sand) "suggests that wind regimes have changed over time". NASA's "Earth Observatory" notes all three types of erg dunes are present in the photos of the Issaouane Erg taken from the International Space Station: stationary mega dunes,
Erg (comics) mutants that the tags were "...a harmless tracking device, inserted under the skin with a simple and painless surgical process." That was not true, as Erg later discovered, as the tags had the ability to generate disabling electronic pulses. Later, Mister M freed the chipped mutants of their devices. During "The Extremists" arc, Erg reappeared alongside some of his fellow Morlocks under the leadership of Masque. Besides Erg, this group consisted of Bliss, Litterbug, the undercover Skids, and the captured Leech. Erg is shown as one of Norman Osborn's mutant prisoners after the riots in San Francisco. He later took