Hiking hazards include BRAMBLES and thorns. BRAMBLES are a type of prickly shrub, usually found in wooded areas, that can cause scratches and scrapes if you come into contact with them. Thorns are sharp, pointed projections found on plants such as roses, cacti, and blackberries, and can also cause cuts and scrapes if you brush against them. Both BRAMBLES and thorns can be a nuisance when hiking, so it is important to be aware of your surroundings and take precautions to avoid them.