(CBSLA.com) — Hours before Southern California resident Ian Sanders died in a BASE jumping accident on Tuesday, he shot footage for a documentary about the high numbers of deaths in the sport.

The experienced BASE jumper and wingsuit flyer had traveled to Turkey for an extreme sports event.

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The gorge of the Karasu, or “dark water” river in the eastern part of the country provided a dramatic venue for a pastime that is as spectacular as it is dangerous. Flanders’ first jump went fine.

“It was a gorgeous flight, a beautiful view of the town. You get to kind of fly over, fly over the town,” Flanders told a local TV crew. “We landed in the river, which was also actually kind of fun.”

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But when Flanders performed his last jump of the day, cameras were rolling when parachute chords got tangled around his legs.

The 37-year-old fell into a rocky cliff face.

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Flanders was the 264th BASE jumper to die since record keeping in the sport began.