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.
![Cliffs, jungle a big hurdle for feds in Hawaii copter crash](https://media.zenfs.com/en/ap.org/46565d6e52b78214c6f1dc18ae71b440)
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.