> Physical

The soviets admitted the gas chambers are "reconstructions" built in the 50s. There is no physical evidence otherwise

> Archeological

Like what? Searches for jewish mass graves typically come up blank. The few that do find bodies (like at Katyn) often turn out to be the work of the commies.

> Photographic

1. Former german inmates from the rhineland internment camps report having been dressed up in concentration camp uniforms and photographed. A lot of those "poor starving jews" are german servicemen.

2. Pictures of typhoid victims does not prove deliberate extermination.

> Witness testimony

The witness testimony of the camps is a fucking circus. A lot of them claim the camps were exactly what the germans said they were: Concentration camps for enemy aliens awaiting deportation. Some germans said they were extermination camps, but only after months of torture. Some other inmates said they were extermination camps but their stories are so wild, impossible, contradictory and at odds with physical evidence that there's no reason to take them seriously.