As for a person who dons the rationalist mask ,I am surprised at your question How come Monkeys built a bridge ? Go back to school and read your Darwin ! You and I are descended from Monkeys .
All that we know is that we do not know enough . We should not destroy something that had survived for thousands of years .Let it be man made or nature made.
Future generations have to have the opportunity to see and evaluate for themselves that whether the structure is man made or not . We should do the construction in a environmentally friendly way
