The Lewis and Clark Salt Makers Return to Seaside. Join interpreters from the Pacific Northwest Living Historians (PNLH) as they once again bring to life the salt camp which those explorers of the Lewis and Clark expedition established over 212 years ago. When the explorers arrived at the Pacific coast in 1805, they needed salt to preserve meat, along with adding a little flavor to their meals. But the supply of salt which they acquired in St. Louis, before they began their long and arduous voyage across the vast American West, was exhausted. So the members of the Corps of North Western Discovery – as Captain Meriwether Lewis called the party in his journal – did the only thing they could: make their own salt. The event site will be at the west end of Avenue U in Seaside.