Design a logo that creatively merges the silhouette of a cave entrance with the form of a barbell. The logo should be simple yet striking, encapsulating the essence of strength training. The cave entrance, shaped distinctly like a barbell, symbolizes a portal to strength, endurance, and personal transformation. The design should be minimalistic, allowing for easy recognition and scalability, suitable for various branding materials. Use bold, clean lines to define the barbell-cave shape, ensuring the logo is effective in black and white as well as in color. This logo should communicate the brand's identity, which is deeply rooted in promoting strength, resilience, and the pursuit of fitness goals --style raw