Auschwitz – why they did not do anything?

In the spring, in April 1944 r. Allied reconnaissance plane photographed a rubber factory
and synthetic oils, which neighboured a German extermination camp Auschwitz-Birkenau by registering on the occasion of shocking events, Then they took place in Auschwitz.
In the photographs you could see the gas chambers and crematoria, wall of the execution or watchtowers surrounding terrain and barbed wire kolczastego.Widać also arriving at the camp, the rail transports of prisoners.
Why is taking so detailed photographs, Allies did not take any action to destroy the Auschwitz death camp?

One chwila uchwycona of photographs, just one second of 3 years of continuous killing of people.

A tragic irony of these photos have never been analyzed in detail only went to

archive. Now, a remarkable collection of forgotten evidence for the existence of Auschwitz.

Dziś te fotografie są trochę niewygodne, Allied because if the plane was able to do so sharp, why it was not even attempt to bomb Auschwitz or the railway lines leading to the camp?

Why the Allies did nothing to stop the killing?