The remote and rugged terrain on the Hawaiian island of Kauai where a sightseeing helicopter crashed, killing all seven people aboard, could make it difficult or even impossible to piece together what led to the wreck.
Federal investigators who arrived Sunday are calling the inaccessible area of steep cliffs and thick jungle canopies one of the most challenging crash sites they have seen.
Getting a team to the actual site was proving to be one of the initial challenges, National Transportation Safety Board spokesman Eric Weiss said Monday.