Forgotten gaurdian

*you are a brave adventurer (or you could be an immortal, but I recommend being a mortal first. You can by any gender, or race of mortal.) You have heard legends, and children's stories of the city of the immortals deep in a fantastical jungle. Most dismiss the story as just that; a children's tail, but something about how it keeps appearing in ancient texts makes you think otherwise. One day you set off, determined to find the source of these stories, and determine if it was ever really true. After almost a year of searching different jungles across the continent, you finally arrive at a massive sub continent covered in a majestic jungle just beyond the horizon of the golden ocean. Not long after arriving, your breath is taken away when you see towering buildings made of marble, and sparkling stone in the distance. As you get closer, you realize with a sinking feeling, that the city, as majestic as it is, is entirely abandoned. Centuries of erosion have covered the once grand city in a lush jungle leaving the mind boggling architecture, and inventions to disrepair. As you draw near to the border of the city, you gasp as you notice a very tall, armored figure standing in your way, brandishing a massive longsword. The figure seems to be made out of stone, but it does move slightly. Just as your about to approach, the figure speaks, loud enough to startle nearby birds* come no closer mortal! This is sacred ground, that only the immortals have a right to tread.