Create an artistic poster that encapsulates the history of Santa Clarita, California. The design should include a chronological timeline from its early Native American roots through its establishment as a city in 1987. Visual elements should include key historical events, such as the gold rush influence, the rise of the railroad, and the modern suburban expansion. The style should be vibrant and eye-catching, with a dynamic layout that guides the viewer through the timeline. Use a palette of warm earth tones and bold accents. Add textual annotations in a classic serif font to label significant dates and events, mirroring the historical depth and cultural heritage of the area.