I think the map is wrong.

According to the pictures of Ivana's grave in this article, the grave is within sight of the First Tee and not the other side of the railroad tracks.

Trump is selling grave sites for the Bedminster Golf Club members. It's not Forest Lawn.

29 July 2022
By Emma James

Ivana Trump’s (click here) final resting place has been pictured for the first time, a week after she was buried next to the first hole at her was ex-husband's tony Bedminster Golf Club.

The New York socialite has had her grave marked with a discreet black glossy memorial and white flowers in a private grassy area in the Trump family plot at the club in New Jersey.

Ivana was laid to rest after a ‘beautiful’ invite-only ceremony at the St. Vincent Ferrer Church, in Manhattan's Upper East Side.

The 73-year-old was found dead at the bottom of her staircase of her Upper East Side townhouse on July 14.

Her grave, which has been cordoned off from the public, is in a secluded spot close to the first hole on the golf course....