What is reddish brown link just behind front tires of dodge caravan, on 2002 Dodge Caravan

The leak seems just behind front tires in the middle.

2 answers
Check all fluids, that should tell what is leaking! Any noise with engine running and trans in gear or turning the steering wheel?
if its brownish red could be trans or pwr steering fluid.could be rack and pinion or other steering gear issues