Answer: greatsaltdesert

AnswerCrossword Clue
GREATSALTDESERTI-80 goes through it in Utah
GREATSALTDESERTMideast expanse
GREATSALTDESERTDasht-e-Kavir, in Iran
GREATSALTDESERTIranian expanse
GREATSALTDESERTPart of Iran that can get quite hot