Maine climate activists joined the Penobscot Nation in Portland’s Congress Square Park on Saturday to call on President Obama to stop a proposed $3.8 billion pipeline in South Dakota.

Speakers included June Sapiel and Dawn Neptune Adams from the Penobscot Nation, as well as Lee Chisolm from 350 Maine.

A source of nationwide protest, the proposed pipeline would carry a half-million barrels of crude oil daily from western North Dakota to Illinois. Despite a federal order to halt construction near an American Indian reservation in North Dakota, the Texas company developing the Dakota Access Pipeline says it is committed to the project. The Standing Rock Sioux Tribe in South Dakota, however, says the pipeline will disturb sacred burial and cultural sites, in addition to harming their water supplies. – Megan Doyle, staff writer