Photos: Endicott Arm & Dawes Glacier.

On the deck of the NCL Spirit as it sails through the Endicott Arm, Alaska.

Lumps of blue ice that have broken off from Dawes Glacier float past as we sail through Endicott Arm in Alaska.

Looking across the swimming pool on the NCL Spirit at the steep rock face of the Endicott Arm as we sail up it.

Alan Morris, poolside on the NCL Spirit as it sails up the Endicott Arm in Alaska.

A large piece of blue ice from Dawes Glacier floats down the Endicott Arm, Alaska.

Dawes Glacier as it enters the Endicott Arm in Alaska.

Dawes Glacier as it enters the Endicott Arm in Alaska.

Dawes Glacier as it enters the Endicott Arm in Alaska.

Alan Morris on the NCL Spirit in the Endicott Arm, in front of Dawes Glacier, Alaska.