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WASHINGTON (WUSA9/AP) - More than 100 goats arrived at Washington's Historic Congressional Cemetery on Wednesdayto help clean up the landmark.

Our cameras were at the scene on their first day at the cemetery. A crowd was gathered to see the goats, who were loaded in a trailer. As you can see in the video, the goats were called out of the trailer and tentatively stepped out but once they spotted the cameras they started to retreat back into the trailer!

WUSA 9's Bruce Leshan will have more on this story at 5 p.m. and 6 p.m. on WUSA 9.

The goats will graze 24 hours a day for six days to eliminate vines, poison ivy and weeds, while also "fertilizing the ground."

The livestock will be penned outside of the burial areas. The cemetery is open from dawn to dusk.

The cemetery says the use of goats will eliminate the need for harmful herbicides and will keep invasive species from killing large trees.

The Congressional Cemetery was founded in the early 1800s and covers 35 acres on Capitol Hill.About 65,000people are buried at the cemetery, including former senators and House members.