Billing is the takeoff and Bir the local village/place to stay/landing zone.
It's heaven for cross country flying and vol-bivouac.
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Maps for Thermocompass http://thermocompass.nethouse.me/page/19190
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Access
There are three options to travel from New Delhi to Bir.
By Air: IGIA New Delhi to Gaggal Airport (Kangra, near Dharamsala) and then taxi or bus to Bir Tibetan Colony. Taxi from Kangra Airport is INR1800 as of 2018.
By Train: Delhi to Pathankot, then taxi or bus to Bir Tibetan Colony.
By A/C Bus (HRTC): Delhi ISBT NE Basement to Baijnath.
http://www.hrtc.gov.in/hrtctickets/Availability.aspx
Rules
SPOT and VHF Radio,
http://international.findmespot.com/
Always share your flight plans with someone.