POLK COUNTY, Fla. -- A part of the I-4 crash investigation is taking place Thursday afternoon at an impound lot. Investigators are checking out dozens of cars involved in the pileup at the Fantasy of Flight attraction near I-4 and 559.

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WATCH REPORT: Burned Vehicles In Field At Fantasy Of Flight
DAY AFTER SLIDESHOWS: Mangled, Burned Vehicles | Repairs Resume | Smog Returns
SLIDESHOWS: Aerial Images | Ground Images | Images Of Fog, Smoke
I-4 STATUS: Detour | Video: No Timeline Released | Controlled Burns
FIND: Incidents On Local Roads, Alternate Routes

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Many of the vehicles stored in a field at Fantasy of Flight are hard to identify, some burned to their core. There are also about a dozen state trooper investigators charged with processing all of them. They said it's a key part of figuring out what went wrong on I-4.

More than 40 vehicles are scattered across the field just north of I-4, about five miles from the accident scene. Most of them are burned beyond recognition.

Florida Highway Patrol investigators are going through all of them looking for any evidence they can find. They said any evidence found will also help them determine who's responsible for the crash.

Insurance adjusters were also on the scene to assess the damage. Florida Highway Patrol said none of the vehicles will be released until the processing is done.

A lot of spectators have been stopping by the wreckage. Officials are discouraging that and are instead asking those involved in the accident to call state police district headquarters in Tampa. They will take down those individuals' information and contact them when the vehicles can be retrieved, if applicable.