Oil and water don't mix, especially when it comes to the Dakota Access Pipeline.
Today, around a hundred people gathered to protest the project that runs through North and South Dakota, Iowa and Illinois.
Construction of the 1,100 mile pipeline has already begun even though the permitting process is not complete. Opposition is being drummed up.
"You can't drink oil, you can't eat the money, but water is very important to us," said Byron Buffalo, a member of the Cheyenne River Sioux Tribe.
A grassroots gathering of protesters saddled up for a spirit ride to preserve tribal water rights.
"It would devastate our clean drinking water which is our primary right," said Phyllis Young, a member of the Standing Rock Sioux Tribe.
This band of grassroots demonstrators is riding against the wind.
They're travelling dozens of miles through the reservation to the mouth of the Cannonball River.
That's the point where the route of the Dakota Access Pipeline is projected to go.
Standing Rock Sioux Tribe Chairman Dave Archambault said, "It's crossing right underneath the main water source, and we're not happy about that because if anything happened we would be without water and water is everything to us."
The trail of resistance doesn't end when the ride is over.
A Spiritual Camp will be set up at the point the pipeline crosses the water.
"We have people that are willing to move out there they're going to set up tipis, live out there for the duration – however long it takes to bring awareness and hopefully stop this pipeline,"
Dana Yellow Fat, a member of the Standing Rock Sioux Tribe.
The Army Corps of Engineers is scheduled to make a decision on the water way portion of the project.
The groups are organizing again later this month for a "Children's Run for the River" and a "Women's Walk for the Water" to continue their opposition of the pipeline.