From Halopedia, the Halo wiki
Album:
Halo: Combat Evolved Anniversary: Original Soundtrack
Composer(s):
Martin O'Donnell and Michael Salvatori
Length:
1:15
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Dewy Decimate
Unreliable Exploration is a track included in the Halo: Combat Evolved Anniversary: Original Soundtrack. It contains a remake of the third part of Enough Dead Heroes and part of Opening Suite from the Halo: Original Soundtrack. It is heard during the opening cutscene of the level Truth and Reconciliation. It runs for 1:15.