stock.adobe.com:

yanlev/stock.adobe.com; tsry360/ stock.adobe.com; Sergey Novikov/stock.adobe.com; sianc/stock.adobe.com; micromonkey/stock.adobe.com; pierrick/stock.adobe.com; Shestakoff/stock.adobe.com;

istockphoto.com:

Imgorthand/istockphoto.com

shutterstock.com

Ipatov/ shutterstock.com; LightfieldStudios/shutterstock.com;

Weitere:

Deutsches Jugendherbergswerk; Kanu Aktiv Tours; DEKT/Tristan Vankann; DEKT/Kay Michalak; ZEBU®-Reisen; Voyage Reiseorganisation GmbH; Stella Berker; Peter Habermehl, Yvonne Opaterny