Penultimate dinosaur

In the book "Prime of Dinosaur" Elena Nesterina, a famous children"s writer and playwright, a strange creature lives. It wanders through the swamps, breaks the trees, leaves huge frightening traces and howls terrifying.
Local residents blame the visitors who arranged some strange game in their forests. Two teams of children compete in it. "Ecologists" perform tasks of the game without any equipment and electronics. They walk, are guided by moss and the sun, use only paper cards. But "techniques" - on the contrary, move on ATVs, are guided by the navigator and carry a portable power station with them.
Nikita from the team of "Technicians" stuck somewhere in a swamp. The coordinator of the game cannot find him. There is no connection, the night is approaching, and a terrible howl comes from the skeletal bar, where the boy was lost. Will Nikita get to his own, or will he have to meet with a swamp howl?
For primary school age