Something like a fine vollyball net, an unsuspecting bird or bat hits the net and is caught in shallow pouches. Wildlife technicians are sometimes required to stack these contraptions two or three high. Onlookers tend to walk into nets at night making for endless hours of amusement. Tiny hairs on the underside of the leaves secrete an oil which gives the skin a burning sensation. The sensation is delayed 10-20 seconds, so those who are unwary usually end up in a really thick patch before realizing it.
Nettles are reason to avoid caving in the summer.
Instead, the Party Caver makes a point to go to all campouts, meetings, meets, OTRs, and conventions purely for entertainment and social value. Project Cavers scour a specific region to learn all there is to know about any caves in the area and what caused them to form there. Hours of oppressive ridgewalking, map hording, stream or air tracing, digging, blasting, photography, diving, stream diversion engineering, biology inventory, local interviews, and drought dances are but a few of the staples of the serious Project Cavers repertoire. Project Cavers are usually found exaggerating stories in the evening so as to recruit help with their projects the next day, and know of more new unmapped caves than they will ever be able to document. Characterized by always carrying an overstuffed backpack, constantly arguing over how to rig anything vertical, and can be found boasting about previous incidents and near death experiences.