Dreams are highly symbolic and can vary significantly from person to person, making it challenging to interpret them definitively. The meaning of dreams often depends on an individual's personal experiences, emotions, and subconscious mind. That said, I can offer some general insights into the symbolism of the elements in your dream:
Big black snake: Snakes are common dream symbols and can represent various things, including hidden fears, transformation, or subconscious desires. The fact that it's black might indicate that you are confronting something negative, repressed emotions, or a perceived threat.
Group of people killing the snake: The presence of a group could suggest a collective effort to overcome a challenge or resolve a shared issue. Killing the snake might signify the need to confront and deal with negative emotions, fears, or problems together.
You pointing out where the snake was hiding: This act of pointing could indicate your role as an initiator or someone who is actively addressing the issue. It may suggest that you have a sense of awareness about the problem or a desire to resolve it.
Snakes being beheaded: The beheading of the snakes could symbolize the desire to eliminate the source of fear or negativity in your life. It may indicate that you or the group you're associated with are taking decisive action to remove a perceived threat or obstacle.
Overall, dreams are complex and can have multiple layers of meaning. To better understand the significance of this dream, consider the context of your waking life. Reflect on any recent events, emotions, or relationships that might be influencing your subconscious mind. Additionally, consider how you felt during the dream and upon waking. Emotions associated with the dream can provide valuable clues about its meaning.
Remember, dream interpretations are subjective and not an exact science. If the dream continues to bother you or if you find it impacting your waking life significantly, you may want to explore it further through journaling, meditation, or speaking with a professional dream analyst or therapist.