Teenage Mutant Ninja Turtles: The Mystery of the Cliffs [1447833] Released: 1992-05-01 Revenue: $0 Budget: $0 Profit: $0 Runtime: 19 mins Popularity: 0.3204 Vote Average: 0 Vote Count: 0 Overview: The Mystery of the Cliffs was a 1992 VHS video commissioned by the United States Bureau of Land Management. It was intended to introduce children to the concept and importance of caretaking of the country's natural resources and heritage sites. All the voice actors from the 1987 series reprise their roles for this video. Cast [13] Barry GordonDonatello Cameron ClarkeLeonardo Townsend ColemanMichaelangelo Rob PaulsenRaphael Peter RenadaySplinter / Splin Mark BarrettMichelangelo Danyol LeonDonatello Laura KoteckiLeonardo Danielle SilveiraRaphael David AnthonySplinter / Splin Scott QuintardFoot No. 1 James SabaFoot No. 2 Michael CarpioFoot No. 3 Trailers