down·slope 
/ˈdaʊnˌsloʊp/ adverb
/ˈdaʊnˌsloʊp/ adverb US : toward the bottom of a hill or mountain : down a slope
▪ We slowly walked downslope. [=(more commonly) downhill] — opposite upslope
▪ We slowly walked downslope. [=(more commonly) downhill] — opposite upslope
— downslope adjective
▪ downslope winds
▪ downslope winds
— downslope noun, plural downslopes [count]
▪ We'll stop to rest on the downslope.
▪ We'll stop to rest on the downslope.
