Iyo US Forest Service inokunetsa kuti ubude kunze uye utore mafoto esango rako remudhorobha kana renharaunda. Iwe unogona kuhwina $200 mugiya rekunze kubva kuNational Forest Foundation.
Kuti uverenge iyo yakazara mitemo yemakwikwi kana kutumira mufananidzo, shanya urbanforest.challenge.gov.