Block 11 proved unsuitable for mass killings, as the basement was difficult to air out afterwards and the crematorium (Crematorium I, which operated until July 1942) was some distance away.
O Bloque 11 non era axeitado para os asasinatos en masa por este método, xa que o soto era difícil de ventilar trala execución e o crematorio estaba a bastante distancia do sitio (o Crematorio I, operado ata xullo de 1942).