"Generate an image featuring a stark, minimalist silhouette of an ancient, dry tree against a solid, dark earth-toned background. The tree should be centered, with its barren branches reaching skyward and its thick roots delving deep into the ground, symbolizing endurance and the passage of time. The silhouette should be detailed enough to convey the tree's aged and gnarled appearance. Above the tree, in a rustic, bold font, place the word 'Underground'. The design should evoke a sense of mystery and the profound depth of stories hidden beneath the surface, all set against a backdrop that emphasizes simplicity and contrast."