old cork oak tree quercus suber in the evening sun in early spring, alentejo portugal europe

old cork oak tree quercus suber evening sun early spring alentejo portugal europe trail hiking cycling walking vicentina rota season forest agriculture algarve aljezur background bark coast costa douro ecology evora faro greece green handicrafts industry italy lagos landscape leaves nature plant portimao portuguese region sardinia sky spain summer sustainability vineyard wine winery