LIMA, Peru >> Greenpeace said Wednesday that its executive director will travel to Peru to personally apologize for the environmental group’s stunt at the world-famous Nazca lines, which Peruvian authorities say harmed the archaeological marvel. 

The group said it was willing to accept the consequences. A senior Peruvian official said Tuesday evening that his government would seek criminal charges against Greenpeace activists who allegedly damaged the lines by leaving footprints in the adjacent desert.

"We fully understand that this looks bad," Greenpeace said in a statement Wednesday. "We came across as careless and crass." 

Greenpeace regularly riles governments and corporations it deems environmental scofflaws. Monday’s action was intended to promote clean energy to delegates from 190 countries at the U.N. climate talks in nearby Lima.

But the group signaled in the second of two emails Wednesday that it recognized it had deeply offended many Peruvians.

It said Greenpeace’s executive director, Kumi Naidoo, would travel to Lima this week to apologize. Greenpeace will fully cooperate with any investigation and is "willing to face fair and reasonable consequences," the statement said.

In the stunt at the U.N. World Heritage site in Peru’s coastal desert, activists laid a message promoting clean energy beside the famed figure of a hummingbird comprised of black rocks on a white background. 

Deputy Culture Minister Luis Jaime Castillo called it a "slap in the face at everything Peruvians consider sacred."

He said the government would seek to prevent those responsible from leaving the country and ask prosecutors to file charges of "attacking archaeological monuments," a crime punishable by up to six years in prison.

The activists entered a "strictly prohibited" area around the Nazca lines, huge figures depicting living creatures, stylized plants and imaginary figures scratched on the surface of the ground between 1,500 and 2,000 years ago. They are believed to have had ritual astronomical functions.