Maui inferno Mystery: Overgrown gully suspected culprit in rapid fire spread

Melted remains of an old car tire. Heavily burned trees. A charred stump of an abandoned utility pole.

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Investigators are examining these and other pieces of evidence as they seek to solve the mystery of last month’s deadly Maui wildfire: How did a small, wind-whipped fire sparked by downed power lines and declared extinguished flare up again hours later into a devastating inferno?

The answer may lie in an overgrown gully beneath Hawaiian Electric Co. power lines and something that harboured smoldering embers from the initial fire before rekindling in high winds into a wall of flame that quickly overtook the town of Lahaina, destroying thousands of structures and killing at least 97 people. But as investigators sift through blackened debris to explain the deadliest US wildfire in more than a century, one fact has become clear: Hawaiian Electric’s right-of-way was untrimmed and unkempt for years, despite being in an area classified as being at high risk for wildfires.