Dong-River has proper rapid stream and famous for its beautiful land scape. Price is diffrent from your courses and you can pick various options.
There are A,B,C and D course. Each course has diffrent route for rafting. In A course, you will do rafting for 3 hours, it's the highlight course of Dong-River. You can see most beautiful valleys and moutains of there. B course takes 2 and half hour, it's relatively easy and gradual. Maybe it can be appropriate course for familiy or school camp. C course is combination of A and B course. It starts from B course to A course. So it takes 5 and half hours. D course is combination of A course and other routes and it takes 8 hours. Since it is too long, you should prepare adequate equipments and holy spirit to indure the full course.
If you need more infromations, this website can help you more specifically with pictures. http://rafting24.co.kr/
Address
산124-2 Samok-ri, Yeongwol-eup, Yeongwol-gun, Gangwon-do, South Korea