If the dreamer is witnessing the landslide as it happens, then sudden and unexpected events, which he really should be prepared for, will take him totally by surprise.
The dream is warning him to be prepared. Other symbols in the dream may reveal exactly what the events will entail, and what he should do about it.
If the landslide has already taken place and the rocks are lying in the middle of the road, then the dreamer faces obstacles ahead that will need to be removed before he or she can move on and accomplish whatever it is that needs to be done.... Dream Explanations of Astro Center
(Stone) Mountain rocks in a dream represent strong believers who hold fast to their religious duties.
If one sees himself trying to lift a heavy rock, testing his strength in a dream, it means that he will face a strong opponent.
If he succeeds at lifting it in the dream, it means that he will win his battle. Otherwise, it could mean that he will lose it. Ifone sees stones hitting him, or falling over his head in a dream, it means that his superior will delegate heavy responsibilities to him, compel him to do a personal favor, depend on him or impose a service on him. In this case, it means that one’s advice will have effect and his opinion will be respected. Throwing stones in every direction from a high 366 altitude in a dream means being unjust toward others, or it could mean being in a position of strength.
If one sees women throwing stones at him using a slingshot in a dream, it means sorcery and a bad spell.
If a poor person sees himself hitting a rock with a staff to split it, and suddenly water gushes forth from it in the dream, it means that he will become rich.
A rock in a dream also represents hard working women who are patient and bearing their sufferings with determination.
A rock in a dream also means longevity, construction, forgetfulness, cattle, impudence, shamelessness, fornication, a dissolute life, immorality, or heartlessness. Seeing a town scattered with rocks in a dream also could mean lower prices.
If a rock is interpreted as a rank, then it means a lasting one. Ifit denotes one’s wife, then it means that she is patient and content.
A rock in a dream also represents a threshold, a house, or a statue. Seeing a mountain of rocks in a dream represents heartless, brutal and cruel men, or it could denote their dwellings.
If one sees himself drilling a hole into a rock in a dream, it means that he is searching for something hard to get, though he will be able to reach as far as he reaches through drilling in his dream. Descending upon a rock in a dream is interpreted the same as descending upon a mountain in a dream. Rocks in a dream are also interpreted to mean dead people, heedlessness, ignorance, or immorality. (Also see Stone)... Islamic Dream Interpretation
The connotation of this symbol as with all other dream symbols, depends on the details and the mood of the dream.
The rock or rocks in your dream could represent a variety of different ideas, but it usually has something to do with matters of this physical world. Rocks generally do not represent emotional, psychological, or spiritual issues. Rather, they may represent earthiness, sturdiness, stability, and a solid foundation. On the other hand they could represent physical obstacles, or difficulties which the dreamer may need to overcome. ... The Bedside Dream Dictionary