WordPress at a glance
action is not described

woocommerce_view_order action-hook . WC 1.0

Usage

add_action( 'woocommerce_view_order', 'action_function_name_2170' );
function action_function_name_2170( $order_id ){
	// action...
}
$order_id
-

Where the hook is called

In file: /templates/myaccount/view-order.php
woocommerce_view_order
woocommerce/templates/myaccount/view-order.php 56
<?php do_action( 'woocommerce_view_order', $order_id ); ?>
woocommerce/templates/order/tracking.php 60
<?php do_action( 'woocommerce_view_order', $order->get_id() ); ?>

Where in WP core the hook is used WooCommerce

woocommerce/includes/wc-template-hooks.php 259
add_action( 'woocommerce_view_order', 'woocommerce_order_details_table', 10 );