Tunnel net

a net with a wide mouth at one end and narrow at the other.

See also: Tunnel

References in periodicals archive ?
The bevy of beauties took to the trees for a nerve-wracking high-wire assault course, tunnel net, zip slide and leap of faith - all taking place 30 feet above the ground.
The rope activity course has 30 elements to it, including Burma bridges, tunnel nets, zip wires and a 35ft free-fall experience, offering around two hours of fun.
Visually impaired cricketers require special kit, including a hollow ball which is filled with rice so it can be heard by the batsman, whose shot is then safely limited by the tunnel nets.