Photos from Fenway Big Air

Snowboarder Silje Norendal of Norway makes a practice jump with the Fenway scoreboard behind him.

A view of the snow-covered ramp inside a mostly-empty Fenway Park.

British snowboarder Billy Morgan makes a practice jump.

British snowboarder Katie Ormerod, with the Boston skyline in the distance, peers down the steep slope.

A side view of the ramp under construction.

Sarka Pancochova of Czech Republic competes in the qualifying round with the tip of the Prudential Center in view.

Jessika Jenson makes a jump, with the Hancock Tower seen in the background.

Workers prepare the jump, as the Prudential building rises in the distance.

A snowboarder takes a practice run down the ramp on Thursday afternoon.

A snowboarder makes a practice run down the ramp at Fenway Park.

Jenna Blasman of Canada exits the ramp after her qualification round performance.

A snowboarder grabs his board with the CITGO sign looming in the background.

Despite the fact that natural snow was falling this afternoon, snowmaking guns were going full blast on the man made hill.

In this photo, a snowboarder engulfs the sun during his jump on Thursday

A snowboarder performs a flip with the Prudential Center and a gloomy Boston sky in the distance.

The scoreboard of the Green Monster was customized for Polartec Big Air Day 1 at Fenway Park.

A worker paints a blue line on the ramp before the event.

Fans watch as the snowboarders put in their final practice runs.

A young, bundled up fan watches the Big Air practice runs.

Snowboarder Michael Schaerer of Switzerland performs with a small crescent of the moon off and an American flag waving atop Fenway Park in the distance.

Julia Marino looks on after her final run in the ladies snowboarding final.

Snowboarder Sepp Smits of Belgium makes his jump with a view of the Prudential Center behind him.

Jessika Jenson of the USA falls on her final jump.

Snowboarder Mons Roysland of Norway jumps with the moon in view.

Snowboarder Max Parrot of Canada rises to the height of the light towers during his jump.

American snowboarder Jessika Jenson takes her run while Fenway Park watches her

Charles Guldemond celebrates after his final run of the night.

Jenna Blasman from Canada in her first jump, as seen in a seven-frame shot, twists from back to front on her run.

Jonas Boesiger of Switzerland soars above the light in the snowboarding finals.

Michael Schaerer falls on his landing in his 2nd jump.