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diff --git a/boost/geometry/index/detail/rtree/visitors/iterator.hpp b/boost/geometry/index/detail/rtree/visitors/iterator.hpp
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+// Boost.Geometry Index
+//
+// R-tree iterator visitor implementation
+//
+// Copyright (c) 2011-2015 Adam Wulkiewicz, Lodz, Poland.
+//
+// Use, modification and distribution is subject to the Boost Software License,
+// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+
+#ifndef BOOST_GEOMETRY_INDEX_DETAIL_RTREE_VISITORS_ITERATOR_HPP
+#define BOOST_GEOMETRY_INDEX_DETAIL_RTREE_VISITORS_ITERATOR_HPP
+
+namespace boost { namespace geometry { namespace index {
+
+namespace detail { namespace rtree { namespace visitors {
+
+template <typename Value, typename Options, typename Translator, typename Box, typename Allocators>
+class iterator
+    : public rtree::visitor<Value, typename Options::parameters_type, Box, Allocators, typename Options::node_tag, true>::type
+{
+public:
+    typedef typename rtree::node<Value, typename Options::parameters_type, Box, Allocators, typename Options::node_tag>::type node;
+    typedef typename rtree::internal_node<Value, typename Options::parameters_type, Box, Allocators, typename Options::node_tag>::type internal_node;
+    typedef typename rtree::leaf<Value, typename Options::parameters_type, Box, Allocators, typename Options::node_tag>::type leaf;
+
+    typedef typename Allocators::size_type size_type;
+    typedef typename Allocators::const_reference const_reference;
+    typedef typename Allocators::node_pointer node_pointer;
+
+    typedef typename rtree::elements_type<internal_node>::type::const_iterator internal_iterator;
+    typedef typename rtree::elements_type<leaf>::type leaf_elements;
+    typedef typename rtree::elements_type<leaf>::type::const_iterator leaf_iterator;
+
+    inline iterator()
+        : m_values(NULL)
+        , m_current()
+    {}
+
+    inline void operator()(internal_node const& n)
+    {
+        typedef typename rtree::elements_type<internal_node>::type elements_type;
+        elements_type const& elements = rtree::elements(n);
+
+        m_internal_stack.push_back(std::make_pair(elements.begin(), elements.end()));
+    }
+
+    inline void operator()(leaf const& n)
+    {
+        m_values = ::boost::addressof(rtree::elements(n));
+        m_current = rtree::elements(n).begin();
+    }
+
+    const_reference dereference() const
+    {
+        BOOST_GEOMETRY_INDEX_ASSERT(m_values, "not dereferencable");
+        return *m_current;
+    }
+
+    void initialize(node_pointer root)
+    {
+        rtree::apply_visitor(*this, *root);
+        search_value();
+    }
+
+    void increment()
+    {
+        ++m_current;
+        search_value();
+    }
+
+    void search_value()
+    {
+        for (;;)
+        {
+            // if leaf is choosen, move to the next value in leaf
+            if ( m_values )
+            {
+                // there are more values in the current leaf
+                if ( m_current != m_values->end() )
+                {
+                    return;
+                }
+                // no more values, clear current leaf
+                else
+                {
+                    m_values = 0;
+                }
+            }
+            // if leaf isn't choosen, move to the next leaf
+            else
+            {
+                // return if there is no more nodes to traverse
+                if ( m_internal_stack.empty() )
+                    return;
+
+                // no more children in current node, remove it from stack
+                if ( m_internal_stack.back().first == m_internal_stack.back().second )
+                {
+                    m_internal_stack.pop_back();
+                    continue;
+                }
+
+                internal_iterator it = m_internal_stack.back().first;
+                ++m_internal_stack.back().first;
+
+                // push the next node to the stack
+                rtree::apply_visitor(*this, *(it->second));
+            }
+        }
+    }
+
+    bool is_end() const
+    {
+        return 0 == m_values;
+    }
+
+    friend bool operator==(iterator const& l, iterator const& r)
+    {
+        return (l.m_values == r.m_values) && (0 == l.m_values || l.m_current == r.m_current );
+    }
+
+private:
+
+    std::vector< std::pair<internal_iterator, internal_iterator> > m_internal_stack;
+    const leaf_elements * m_values;
+    leaf_iterator m_current;
+};
+
+}}} // namespace detail::rtree::visitors
+
+}}} // namespace boost::geometry::index
+
+#endif // BOOST_GEOMETRY_INDEX_DETAIL_RTREE_VISITORS_ITERATOR_HPP