All cancelations or changes must be sent in writing to email: tunnels-spain2022@atc-piarc.com

Cancelations received up to 29 September 2022, will be refunded less 30 € (+VAT) for administrative costs.

No refund will be made for cancellations received after 30 september 2022, or registered participants who fail to attend.

Refunds will be made once the congress is over.