Which Roadblock Challenge in The Amazing Race (2001) was the most difficult?

Roadblock Challenges
The Amazing Race (2001)
The Amazing Race
TV
Roadblock Challenges poll options
Roadblock Challenges
The Amazing Race (2001)
The Amazing Race
- Eating four pounds of caviar in Russia
- Searching for a gnome in a field of 20,000 in France
- Climbing the Great Wall of China
- Assembling a dinosaur in Mongolia.