portugal, alentejo region. cork oak tree, quercus suber, surrounded by wild chamomiles, matricaria chamomilla

portugal alentejo wild chamomile matricaria chamomilla flower blossom santiago cacem white yellow quercus suber sky tree field landscape meadow spring lupine agriculture rural plant outdoor countryside natural tranquil vibrant freshness europe wildflower bloom flora lupin petal environment trunk cork oak wood portuguese mediterranean sustainability ecology algarve hiking douro