Hamon-gog = "multitude of Gog"

the name to be given to a valley of graves; ravine or glen, now known as 'the ravine of the passengers', located on the east side of the Dead Sea

Combined with gay (גַּיְא " Valley" H1516N)

Root √המה: הָמָה vb murmur growl roar be boisterous Qal growl like a dog murmur , fig. of soul in discouragement roar , of waves be in commotion stir , be boisterous turbulent .

הָמוֹן n.m sound murmur roar crowd abundance sound murmur rush roar . tumult confusion ,(as occasioning a roar) crowd multitude , great number abundance ,(late) abundance wealth .