Peak 
To dream that you are at the peak of the mountain represents your victories and accomplishments. You will reach greater heights in life.
Your dream may on the other hand be referring to the word 'peek'. This may symbolize something you are not supposed to possess.
Mountains
To dream of mountains means that there are pressing issues and urgent matters to resolve. If you are on top of the mountain, this signifies that you have accomplished your goals. On one hand, mountains denote a higher level of understanding, awareness, and wisdom.
To dream that you are climbing a mountain is symbolic of your focus and persistence for personal goals and objectives.
To dream that you fell off a mountain suggests that you want instant success and gratification. You believe the ends will justify the means. This dream also tells of your tendency to succumb to pressures in your environment.
Dew
To dream that dew is falling on you suggests that you could become sick or have a fever.
To witness dew twinkling in the grass indicates integrity and prosperity.
Yeti
To dream of a yeti implies a need to learn to balance your rational and reasonable side with your more volatile, instinctive, and emotional side.
Bear
To dream about being attacked by a bear suggests that boldness and mounting barriers in your way. You could possibly be placed in a dangerous situation. Bears represent the cycle of life. This could signify a moment in your life that requires self-analysis and deep thought. This dream could also be the homonym of 'bare', indicating that you might have to 'bare your soul' and reveal yourself openly.
To dream about a polar bear represents a reawakening.
Hill
To dream that you are climbing a hill reflects dangers and struggles. If you manage to reach the hill in your dream, then you will overcome life hardships. Your dream should be a motivation to push yourself and reach for your goals.
Giant
To dream about a giant indicates a battle between you and your foes. This could end up being a difficult challenge to endure. This dream could also signify that some emotional element is overpowering you.
To dream that you turn into a giant represents that you feel unworthy or inferior.
Snake
To dream of seeing or being bitten by a snake implies that you are afraid and anxious about some issue in your life. Perhaps this dream is suggesting that you should be aware of a pending situation that may cause you harm.
The snake can also represent the male genitals and may be warning you against entering into a certain sexual encounter. The snake can also represent someone in your life who is heartless, cruel, and treacherous. On a more optimistic note, the snake symbolizes intelligence, change, and understanding. It implies revitalization of the spirit and alterations in life.
Alder
Dreaming of an alder tree suggests a previously unknown health issue, as this tree has been used and known for centuries in the treatment of various ailments. Take this as a reminder to look after yourself and schedule a checkup if needed.
Alternatively, dreaming of an alder may symbolize fertility and stability.
Tunnel
To dream of a tunnel represents the main female reproductive organ, the womb, and giving birth. Hence, it may indicate your need for protection and nurturing.
To dream that you are going through a tunnel suggests that you are discovering parts of your unconscious. You are in the process of gaining understanding and enlightenment. Alternatively, it may indicate your myopic nature.
To see light at the end of the tunnel symbolizes hope and a brighter future.
Valley
To dream of a valley indicates your life will soon see change. These changes will bring with them much needed happiness and peace of mind.
Wealth
To dream that you are very wealthy implies you are very driven to obtain wealth in your waking life. A dream in which your friends or family are very wealthy is an indication that they are true to you and will stand by you when you are in need of them.