Check out this beautiful drone video from the heart of the Portuguese mountains, compliments of contributor Francisco Rodriguez. The Serra de Estrela is Portugal's primary mountain range. It's about 100 km (60 mi.) long and runs through the country's Centro and Norte regions. The area shown here is the Loriga Valley. It's in the southern part of the Guarda District, which is split between the Norte and Centro regions on the eastern side of the country.