gradation of sun light at green rice paddy field in silaban margu village, humbang hasundutan regency, indonesia

caldera deep elevation field food forest green harvested hasundutan humbang indonesia island janji lake landscape large largest locals main many margu middle months natural north northern paddy part pine places planted province raja regency rice samosir silaban south subdistrict sumatra surface tipang toba tree trees view village volcanic west wide will world