German tourist Christine Lenicker hasn't been seen for more than three weeks.

Police have found a body believed to be missing German tramper Christine Lenicker.

Detective Sergeant John Kean said police uncovered the body on the western side of the Homer Tunnel carpark after snow had melted.

It was removed yesterday to undergo formal identification, he said.

It appeared the woman had fallen from a height, Kean said.

Lenicker had told people she was going to walk the Gertrude Saddle. Instead she hiked the Homer Saddle walk, he said.

Last week police spoke with a hiker who had travelled with Lenicker from Te Anau to the Homer Tunnel car park.

He was able to help determine where Lenicker had gone, Kean said.

"Police have advised Christine's family and the German Embassy, and we are offering as much support as we can."

It had not been determined whether her family would come to New Zealand, he said.

Lenicker, 38, has been missing since she failed to return from a hike she took on the Gertrude Saddle on March 30.

She was reported missing to police on April 10 by a friend in Nelson.

Lenicker's car was found at the Homer Tunnel car park and has since been secured at the Te Anau police station.