The title being a given, the question that quickly arises is; “What makes a trunk great?” and only marginally second comes the question: “How do we create a great trunk?”.
How to create a Bonsai tree (DIY)
The secret philosophy of cultivating a bonsai tree - Big Think
New to the Bonsai - guidance for my tree
Fukien Tea Bonsai Tree - Large Curved Trunk Style
Tiny Trees 101: How to Care for Bonsai
Bonsai tree care and maintenance - Bonsai Empire
The juniper tree is a classic bonsai that lends itself to a stunning textured foliage, and a gorgeous twisted trunk. The perfect plant for a beginner
Japanese Juniper Bonsai Tree with Candle
New to the Bonsai - guidance for my tree
Beginner's Guide to Bonsai Trees: Growing, Styles, and Care Tips - Arborist Now
Bonsai Tree – A Traditional Japanese Art Form
Repotting Bonsai Trees
Hawaiian Paradise Bonsai Tree
Fukien Tea (Carmona) Indoor Bonsai Tree. - Brussel's Bonsai
Ficus Microcarpa 'Tiger Bark' – Bonsai Tree - Wigert's Bonsai