The Town does not maintain and has not improved, the rock scramble that is the ascent and descent to and from the top of Castle Rock. If you are a skilled climber or hiker, you can probably make it to the top. Climbing to the top is not generally illegal, but it is not recommended. You are responsible for your own safety and your decision to leave the trail.
The Rock has sheer walls that drop 50 feet or more, and falls have resulted in serious injuries and deaths. The climb down is more difficult than the climb up. Do not risk your life by depending on vegetation to stop a slip.
Climbers can be held responsible if hiking outside the park’s hours of dusk to dawn if creating a dangerous condition such as kicking rocks off of the summit – even if on accident – or for requiring an emergency response.
Additional information on Rock Park.