Single-barrelled pole beacon
This single-barrelled pole beacon replaced modern leading lights and represents the traditional style of beacon in the archipelago – a beacon that is made up of vertical poles tied at the top in teepee fashion. In the olden days, the barrel at the top of the beacon would have contained oil or tar, and the beacon was therefore easy to set alight as a warning signal when necessary. These types of beacons were originally located on cliff tops. Descriptions of beacons dating back as far as the Iron Age still exist (possibly “Balagardssida” 1007 / the tale of St Olaf). The Lähdekari pole beacon in the Gulf of Bothnia (1883) was 35 feet tall (10 metres). Similar pole beacons were known to exist in Sweden, for example in Sörklubben.