Complex sentence: It stretches from Mono and Inyo County in the north to San Bernardino County in the south, along the eastern side of the Sierra Nevada, through the Mojave Desert to the San Bernardino Mountains.
Split into simpler sentences: It stretches from Inyo and Mono counties in the north to San Bernardino County in the south. Geographically, the district follows the eastern side of the Sierra Nevada, south through the Mojave Desert to the San Bernardino Mountains.