What is the meaning of the number and unit "- 715 м." in the sentence: "- 715 м. разные цвета коричневые"

The phrase "- 715 м." most likely refers to a measurement of 715 meters. In the context of "разные цвета коричневые" (different brown colors), this could indicate:

• The altitude or depth of a geological formation where brown colors are observed.
• The length of a geological feature (like a vein or layer) exhibiting brown colors.
• A distance from a reference point where brown colors are present.

Without more context, the exact meaning is ambiguous, but '715 m' represents a measure of distance.