▁people ▁in ▁S out heast ▁Asia , ▁such ▁as ▁the ▁M aman wa , ▁a ▁Neg rito ▁people ▁in ▁the ▁Philippines , ▁suggesting ▁the ▁inter bre eding ▁took ▁place ▁in ▁Eastern ▁Asia ▁where ▁the ▁Den is ov ans ▁lived . ▁Den is ov ans ▁may ▁have ▁crossed ▁the ▁Wal lace ▁Line , ▁with ▁Wal lace a ▁serving ▁as ▁their ▁last ▁ref ug ium . ▁H omo ▁ere ct us ▁had ▁crossed ▁the ▁Lomb ok ▁gap ▁reaching ▁as ▁far ▁as ▁Fl ores , ▁but ▁never ▁made ▁it ▁to ▁Australia . ▁ ▁During ▁this ▁time ▁sea ▁level ▁was ▁much ▁lower ▁and ▁most ▁of ▁Mar itime ▁S out heast ▁Asia ▁formed ▁one ▁land ▁mass ▁known ▁as ▁S unda . ▁M igration ▁continued ▁S out heast ▁on ▁the ▁coast al ▁route ▁to ▁the ▁stra its ▁between ▁S unda ▁and ▁Sah ul , ▁the ▁contin ental ▁land ▁mass ▁of ▁present - day ▁Australia ▁and ▁New ▁Guinea . ▁The ▁g aps ▁on ▁the ▁We ber ▁Line ▁are ▁up ▁to ▁ 9 0   km ▁wide , ▁so ▁the ▁migration ▁to ▁Australia ▁and ▁New ▁Guinea ▁would ▁have ▁required ▁se af aring ▁skills . ▁M igration ▁also ▁continued ▁along ▁the ▁coast ▁eventually ▁turning ▁n ortheast ▁to ▁China ▁and ▁finally ▁reaching ▁Japan ▁before ▁turning ▁in land . ▁This ▁is ▁ev iden ced ▁by ▁the ▁pattern ▁of ▁mit och ond rial ▁ha p lo groups ▁desc ended ▁from ▁ha p lo group ▁M , ▁and ▁in ▁Y - chrom os ome ▁ha p lo group ▁C . ▁ ▁Se qu encing ▁of ▁one