Thousands of people descended upon Woodhouse Moor, in Leeds on Wednesday as part of a huge celebration to mark what is known by many as "4/20 Day".
The day which is celebrated on April 20 every year, is an international day for the celebration of cannabis and counterculture, taken from the slang 4/20 (pronounced four-twenty), which refers to smoking cannabis, on April 20 (it's taken from the American date format).
For many people it’s a chance to lobby for the legalisation of the drug, which remains outlawed in many parts of the world, including in the UK.