Warning sign mounted on a tree marking a mountain bike (MTB) trail through a forest. The triangular safety sign alerts hikers and cyclists to an active biking route, promoting awareness hiking, and mountain biking in Sintra, Portugal. Poster #895509982
Warning sign mounted on a tree marking a mountain bike (MTB) trail through a forest. The triangular safety sign alerts hikers and cyclists to an active biking route, promoting awareness hiking, and mountain biking in Sintra, Portugal. Poster #895509982
