The following, from this John Pratt article:
Early in the Church, D&C 133 was usually interpreted literally, that is, "highway" means a major road, "ice" means ice, "walk" means walk, and "great deep" means ocean, suggesting a picturesque scene something like the above painting. For example, the apostle Orson Pratt, commenting on those verses, explained:
"To show that they come with power they come on a highway cast up for them; and ice feels the power of God and flows down, making room for them; and the barren deserts of the north, wherever they may go and need water, will yield forth pools of living water to quench their thirst. As they come to sing in the height of Zion, the everlasting hills, this great Rocky Mountain range, extending from the arctic regions south to the central portions of America, will tremble beneath the power of God at the approach of that people. . . . But where have this great company been, where has this mighty host come from? They have come from their hiding place in the north country; they have been led thence by the Prophets of the Most High God, the Lord going before their camp, talking with them out of the cloud, as he talked in ancient days with the camp of Israel, uttering his voice before his army, for his camp will be very great." 
This quote above fits PERFECTLY with what Neal A. Maxwell said at the Conference on the tribal land in ND as he prepared them to receive the Ten Tribes. They will come down the spine (on the plains side) of the Rockies to Cardston where they will meet the natives of Canada gathered to their sacred lands at Waterton - and then will head south into Montana and follow the Missouri River east and then almost due south until they reach the NJ to "fill the plains" of the land that will have been swept clean at that point. I had a two leg flight from Calgary to Texas and the first leg took me to ManyApples, ManySodas. The flight followed the upper reaches of the Missouri River nearly perfectly and I could see in my mind's eye, this great trek coming south. Then, as suddenly as the Missouri appeared below me, it shot south and eventually down to Kansas City.
So, this is how the gathering of the children of Joseph will take place. Ask yourself if your mind is filled with darkness at this reading - or does this fill you with gladness and anticipation? Does it feel "delicious" to you? You have your answer right there.
The massive recent spate of movies involving fighting an invading "alien" species are all designed to program you to hate and resist these people that are returning to take over the land. Aliens (green creatures and bug-like monsters), are all just a bunch of crap. Nothing like that exists - it is pure fantasy and a complete delusion for those who really believe in them.
BUT - the underlying message is that the people of the world should unite to jointly resist their coming. This is all part of the programming you are receiving from the dark side to attempt to thwart God's long-announced plans of the return of those who were hidden away in a far part of the vineyard against a day when the rest of the tree would be corrupted for the most part.
In every interaction between the propaganda masters and society, I always ask myself what message are they trying to get across - and never buy the cheap crap they are foisting, at face value.
When it comes down to it, these will be large people - physically and also technologically. They will have had millennia to perfect their sciences due to lack of war and so much else. They will be able to crush anyone who opposes them - and, if you have wondered how the NJ will be built to such amazing proportions and where we will get the tech to build it (that we do not have at this time - even close to it, really) - it will be from these people. They had the same stuff that the Savior gave them in 33AD - and did not lose it like the Nephites did. The genetically modified (colored) cottons and amazing fruits and vegetables that suddenly appeared on the scene around 2,000 years ago were from the infusion of an enlightened people. In their depravity, all of that was lost as the wars of annihilation kicked in. The people in the north have not had this - and so they have advanced and will crush those who oppose them, at every turn.
When the slicksters and propagandists start pumping out the misinformation - please, please, please do NOT fall for it. You may find yourself fighting on the wrong side - to your eternal and temporal damnation. Have the Holy Spirit for your guide - and know your doctrines. It could save your life. Too many LDS are clueless and do not have the Gift of Discernment - and they will pay dearly for it.