The customary blast of a foghorn will signal the re-opening of the Sumburgh Head Lighthouse visitor centre and nature reserve this weekend.
The Shetland attraction opens for the summer season at 11am on Saturday and the restored foghorn will be sounded at noon.
Brian Johnson, the lighthouse engineer who carried out the restoration work to bring the impressive sound back to life, will do the honours.
Power behind the horn is generated by the 3 K-series diesel Kelvin engines in the engine room which generate the 25psi of pressure required to make the sound.
The foghorn was restored during the renovation of the site in 2013/14 and received an Engineering Heritage Award from the Institute of Mechanical Engineers, as it is the last remaining example of this foghorn known in the UK.
Known as a world class visitor attraction, the site provides an engaging and interactive experience for the whole family.
People can explore the history and natural heritage of Sumburgh Head from early geological beginnings and Iron Age settlers to lighthouse keepers, whales, puffins and much more.
The visitor centre at Sumburgh Head will be open daily until the end of September, to 5.30pm each day.
The Stevenson Centre tearoom will again be open this year from 11am to 4.30pm daily, except Wednesdays when the building will be used for educational events.