This is Samadhi of Khade Baba behind the Gorakhnath Temple on top of Gorakhnath Hill.
There is space to sit and meditate. You can go into meditative states effortlessly here.
How to get there
The Samadhi is on top of Gorakhnath hill, 500 m north of Indreshwor Mahadev Temple.
Map: https://maps.app.goo.gl/SRysTzwpxARS9wQn6