There is a Celtic saying that heaven and earth are only three feet apart, but in the thin places that distance is even smaller. A thin place is where the veil that separates heaven and earth is lifted and one is able to receive a glimpse of the glory of God.
When we practice solitude, we may encounter a ‘thin place’ where God’s Spirit can interact with us in a more personal way than we usually allow for.
Jesus worshipped and prayed in public gatherings and small groups, but much attention in the gospels is given to his times of solitude away from the crowd. Alone in the wilderness, on a mountain, in a garden... coming alone to the Father with his concerns, temptations and dread...
And to the thin place, we are beckoned…
Every day I talk with people who struggle with anxious minds. There is often a state of mental babbling that silence alone cannot remedy. In fact, for many people the chatty parrot in the cranium cage will not let them sleep. Jesus says to seek solitude and say a few things, but also stop talking after awhile. There is a place of trust in the silence. You need to find your way to God in that place.
Bonhoeffer says right words come out of right silence, and right silence comes out of right words—an interplay between silence and word. Scriptures also tell us that in a multitude of words, there is much transgression. What's the solution to that? To shut our mouths every so often, so that we can hear a word from the Lord... One of the reasons we don't hear a word from the Lord and yet long for one is that we never stop the flow of our own words. How in the world are we going to hear something from God if we're always talking?
 Sylvia Maddox, http://www.explorefaith.org/mystery/mysteryThinPlaces.html