Twin sisters' car plunges from cliff in bizarre Hawaii tragedy

Anastasia Duval dies while identical twin Alison is air-lifted to hospital

Anastasia and Alexandria Duval (Twin Power Yoga/Pintrest)

The co-founder of a Florida yoga studio has died after her car plunged 200-feet down the side of a cliff in Hawaii, leaving her twin sister in critical condition.

Anastasia Duval, 37, died after her white Ford Explorer collided with a rock wall on the Makai side of the Hana Highway, landing on the rocky shoreline below.

Ms Duval was pronounced dead at the scene. Another 37-year-old woman, believed to be twin sister Alison Duval, had been driving. Police said she was airlifted to the Maui Memorial Medical Centre in a critical condition.

Both women were from the Haiku area, Maui police said.

Police said elements surrounding the incident were still being investigated, including any possible involvement of speed, drugs and alcohol.

The twins were known for their yoga business in Florida, Twin Power Yoga, which they ran under the names Ann and Alison Dadow. In December 2014 the pair reportedly left Florida to move to Utah.

The two women plunged 200 feet off the cliff onto the rocky shoreline below (YouTube)

They were reported to have relocated to Hawaii in January this year, when Anastasia apparently appeared at a homeless shelter in Maui.