A kilometer and half before you reach Savandurga main dome, there is a goat path that starts to the left of the road and leads up to the Banyan Tree Pillar. BT Pillar is visible from the road. As of early 2019, an inverted ‘peace sign’ painted in blue on a tree adjacent to the road marked the start of the trail leading upto the BT Pillar.
The hike up takes about 20-30 minutes from the trail head. There is an intermediate plateau along the trail. The trail bends right, behind the plateau.
The hike to Louvre is slightly more challenging. In 2014, the base was overgrown from lack of traffic it took much hacking to clear the thorns along the path.
Since 2014, the path has been cleared quite a bit. But it tends to overgrow quickly.