Satellite imagery taken the day before last week’s summit between U.S. President Donald Trump and North Korean leader Kim Jong Un shows vessels laden with coal at North Korea’s Nampho Port.

The image, taken on February 26 by Planet Labs’ Sky Sat platform, shows two ships docked at Nampho’s coal handling area.

The photos captured one larger ship and another smaller vessel using two different piers at the terminal, both have their cargo doors open with mounds of what appears to be coal inside the holds.

The Nampho terminal also