on the shingle shores of the lake. In 1984, the composer Ron Goodwin created a New Zealand Suite of six pieces recording his impressions of places he had visited. One of these is the “Earnslaw Steam Theme” based on the rhythm of the ship's engines, which he wrote after a trip to Lake Wakatipu. In March 1990, Queen Elizabeth II and Prince Philip travelled on the Earnslaw. Other royalty who have been on board include the Prince of Thailand and the King and Queen of Belgium. The TSS Earnslaw made a brief appearance as an Amazon River boat in the movie Indiana Jones and the Kingdom of the Crystal Skull (2008). In June 2021, a report into greenhouse gas emissions in Otago calculated that in the 12 month period July 2018 to June 2019, the TSS Earnslaw emitted 4076 tonnes of 'carbon dioxide-equivalent'. This represented 1 percent of all transport-related greenhouse gas emissions in the Queenstown-Lakes District. In October 2021, RealNZ announced that it was investigating carbon-neutral or carbon-zero means of powering the vessel. At a celebration in 2022 of TSS Earnslaw completing 110 years of service on the lake, RealNZ said that it was exploring biofuel, wood pellets and hydrogen as alternative sources of bolier fuel, but that a decision was a few years away. Heritage status A detailed history of the Earnslaw including archival photographs has been published in the NZ Maritime Record maintained by the NZ National Maritime Museum. In 1990, the TSS Earnslaw was recognised as a significant part of New Zealand's engineering heritage by the Institution of Professional Engineers New Zealand (now Engineering New Zealand). The recognition was part of the “Engineering to 1990” project celebrating the country’s sesquicentenary in 1990. A plaque was fixed to the vessel to that reads: "IPENZ recognises this engineering work as an important part of NZ's engineering heritage. The largest steamship built in NZ it is now one of the world’s last coal-fired passenger steamers". In July 2013, the Southern Heritage Trust unveiled a plaque on the Dunedin Railway Station overbridge commemorating the location of the McGregor & Co factory where TSS Earnslaw was built. In December 2017, the New Zealand Ministry for Culture and Heritage recognized the TSS Earnslaw as one of twelve significant sites in Otago to be included in its Landmarks Whenua Tohunga programme. The Earnslaw is winched out of the lake on a cradle when