Solidarity Party Youth League (in Swedish: SolidaritetsPartiets Ungdomsförbund) was a youth group connected to the Solidarity Party in Vallentuna, Sweden. SPUF existed in 1988.

• Serra do Barbosão Municipal Nature Park
• Serra do Cabral
• Serra do Cabral State Park
• Serra do Caparao
• Serra do Caparaó
• Serra do Conduru State Park
• Serra do Divisor
• Serra do Gandarela National Park
• Serra do Mar Ecological Corridor
• Serra do Mar Environmental Protection Area
• Serra do Marão
• Serra do Papagaio State Park
• Serra do Pico da Antónia
• Serra do Pico da Antónia Important Bird Area
• Serra do Ramalho, Bahia
• Serra do Rola-Moça State Park
• Serra dos Carajás
• Serra dos Martírios/Andorinhas State Park
• Serra dos Parecis
• Serra dos Parecis State Park
• Serra dos Pirineus State Park
• Serra dos Reis A State Park
• Serra dos Reis State Park
• Serra dos Trés Irmãos Ecological Station
• Serra dos Três Irmãos Ecological Station