An extremely gutsy 85-year-old British lady reached speeds of 100 mph as she zipped across the sky on what’s said to be the fastest zipline in the world, according to Reuters news agency.

The woman, Sally Webster, was accompanied by her daughter Juliet, a 52-year-old yoga instructor. The video shows the mother-daughter duo speeding down the Welsh zipline. Sally Webster said the experience made her “feel alive.”